Robey v. Superior Court , 56 Cal. 4th 1218 ( 2013 )


Menu:
  • Filed 6/27/13
    IN THE SUPREME COURT OF CALIFORNIA
    KEWHAN ROBEY,                       )
    )
    Petitioner,              )
    )                             S197735
    v.                       )
    )                       Ct.App. 2/6 B231019
    THE SUPERIOR COURT OF SANTA         )
    BARBARA COUNTY,                     )                       Santa Barbara County
    )                      Super. Ct. No. 1349412
    Respondent;              )
    )
    THE PEOPLE,                         )
    )
    Real Party in Interest.  )
    ____________________________________)
    Petitioner Kewhan Robey was arrested and charged with possession of
    marijuana for sale and with the sale or transportation of marijuana after police
    seized a package from a private shipping company and discovered the drug inside.
    The superior court denied petitioner‘s motion to suppress evidence, relying on
    exigent circumstances and inevitable discovery. The Court of Appeal granted
    Robey‘s petition for writ of mandate and ordered the superior court to grant the
    motion to suppress. The Office of the Santa Barbara County District Attorney, as
    real party in interest, sought this court‘s review on two issues: (1) whether a
    police officer may conduct a warrantless search of a package seized from a
    common carrier based on the exigent circumstance of the container‘s mobility, and
    1
    (2) whether a police officer can conduct a warrantless search based on the ―plain
    smell‖ of contraband.
    On the first issue, we hold that although a container‘s mobility may
    constitute exigent circumstances sufficient to justify a warrantless seizure, it
    cannot alone justify a search of the container once it has been seized. On the
    second issue, we find that the District Attorney forfeited the plain smell argument
    by failing to raise it in opposition to petitioner‘s motion to suppress in the superior
    court. Because the District Attorney presents no other grounds to justify the
    search of the container, petitioner‘s motion to suppress should be granted as to the
    evidence obtained as a result of the warrantless search.
    I.
    On July 23, 2010, FedEx employee Nancy Her contacted the Santa Maria
    Police Department to report that a package smelling of marijuana had been
    dropped off for shipment to an Illinois address. Officer Nathan Totorica
    responded. As he entered the store and walked toward the package, Officer
    Totorica smelled the odor of marijuana, which got stronger as he approached the
    package. Nancy Her informed Officer Totorica that FedEx could not deliver the
    package and asked what she should do with it.
    Officer Totorica seized the unopened and sealed box as evidence and took
    it to the police station. At the station, he contacted his supervisor, Lieutenant Jerel
    Haley, who also concluded that the box smelled of marijuana. The officers
    conferred with the narcotics unit and then opened the box. Inside they found 444
    grams of marijuana. The officers did not seek a warrant for either the seizure or
    subsequent search of the container.
    Three days later, petitioner Robey arrived at the same FedEx location to
    inquire about an undelivered package. Her recognized petitioner as the man who
    had delivered the box seized by the police, and she telephoned Officer Totorica.
    2
    Officer Totorica returned to the store and arrested petitioner, who was carrying a
    packing slip for the seized package.
    Petitioner was charged with possession of marijuana for sale and with the
    sale or transportation of marijuana. (Health & Saf. Code, §§ 11359, 11360, subd.
    (a).) The superior court denied petitioner‘s motion to suppress evidence, finding
    that exigent circumstances justified the seizure and that the subsequent search was
    valid under the inevitable discovery doctrine, presumably because the police had
    sufficient probable cause to obtain a warrant had one been sought.
    Petitioner then sought a writ of mandate in the Court of Appeal, which in
    turn issued an order to show cause to the superior court. The Court of Appeal, on
    its own initiative, asked the parties to provide an informal response to several
    questions, including whether the plain smell of marijuana, by itself, would have
    allowed the search and seizure of the package without a warrant. After briefing
    and argument by the parties, the Court of Appeal granted the petition and issued a
    peremptory writ of mandate directing the trial court to grant petitioner‘s motion to
    suppress evidence. Without deciding whether the officer was entitled to seize the
    package, the Court of Appeal held (1) that exigent circumstances did not justify
    the subsequent search of the container, (2) that the odor of contraband alone
    cannot justify a warrantless search, (3) that the inevitable discovery doctrine did
    not apply to the facts here, and (4) that petitioner had not abandoned the package
    and therefore had ―standing‖ to seek suppression of the evidence.
    The District Attorney sought review in this court on two issues: whether
    the mobility of the package constituted an exigent circumstance permitting the
    officers to conduct a warrantless search after the package was already seized, and
    whether the plain smell of marijuana constitutes an exception to the warrant
    requirement. We granted review.
    3
    II.
    ―Our review of issues related to the suppression of evidence seized by the
    police is governed by federal constitutional standards.‖ (People v. Lenart (2004)
    
    32 Cal.4th 1107
    , 1118; see Cal. Const., art. I, § 28, subd. (f)(2).) ―In reviewing a
    trial court‘s ruling on a motion to suppress evidence, we defer to that court‘s
    factual findings, express or implied, if they are supported by substantial evidence.
    [Citation.] We exercise our independent judgment in determining whether, on the
    facts presented, the search or seizure was reasonable under the Fourth
    Amendment.‖ (Lenart, at p. 1119.)
    ―The touchstone of Fourth Amendment analysis is whether a person has a
    ‗constitutionally protected reasonable expectation of privacy.‘ ‖ (California v.
    Ciraolo (1986) 
    476 U.S. 207
    , 211, quoting Katz v. United States (1967) 
    389 U.S. 347
    , 360 (conc. opn. by Harlan, J.).) ―What a person knowingly exposes to the
    public, even in his own home or office, is not a subject of Fourth Amendment
    protection. [Citation.] But what he seeks to preserve as private, even in an area
    accessible to the public, may be constitutionally protected.‖ (Katz, at pp. 351–352
    (maj. opn.).) ―The Fourth Amendment proscribes all unreasonable searches and
    seizures, and it is a cardinal principle that ‗searches conducted outside the judicial
    process, without prior approval by judge or magistrate, are per se unreasonable
    under the Fourth Amendment — subject only to a few specifically established and
    well-delineated exceptions.‘ [(Katz, at p. 357).]‖ (Mincey v. Arizona (1978) 
    437 U.S. 385
    , 390.) It is well established that the Fourth Amendment‘s protection
    extends to letters and other sealed packages in shipment. (See, e.g., United States
    v. Jacobsen (1984) 
    466 U.S. 109
    , 114 (Jacobsen); United States v. Van Leeuwen
    (1970) 
    397 U.S. 249
    , 251–252; Ex parte Jackson (1877) 
    96 U.S. 727
    , 733.)
    As an initial matter, the District Attorney says petitioner abandoned his
    interest in the package by using a false name and address when he shipped it. But
    4
    this argument is unavailing because the District Attorney, at the suppression
    hearing, accepted petitioner‘s offer of proof to establish a privacy interest in the
    container, a concession inconsistent with the District Attorney‘s later claim of
    abandonment. In addition, the District Attorney did not enter the packing slip into
    evidence or create any other record of a false name or address to support a claim
    of abandonment in response to defense counsel‘s claim that petitioner showed he
    continued to have an interest in the package by checking on its delivery after
    leaving it for shipment. (See People v. Pereira (2007) 
    150 Cal.App.4th 1106
    ,
    1113–1114 [upholding trial court‘s finding that defendant did not abandon
    package despite using false name and return address because other evidence
    showed defendant ― ‗really care[d] about it getting delivered‘ ‖].)
    As to the first issue on which we granted review, the District Attorney
    contends that petitioner‘s motion to suppress should be denied because the
    warrantless seizure and subsequent search of the container in this case were
    justified by exigent circumstances arising from the container‘s mobility. Here
    petitioner contests only the search, not the seizure, of the container. As explained
    below, we conclude that although the mobility of a package in shipment may
    constitute an exigent circumstance permitting officers to seize it without a warrant,
    such mobility cannot alone justify a warrantless search of the package after it has
    been seized.
    A.
    The District Attorney argues that ―[o]nce the package was seized, law
    enforcement had the right to open the package based on the exigent circumstances
    that existed at the time of the seizure.‖ For this proposition, the District Attorney
    relies principally on People v. McKinnon (1972) 
    7 Cal.3d 899
     (McKinnon). The
    defendant in McKinnon brought five cartons to an airline freight counter for
    shipment, describing their contents as ―personal effects.‖ After the defendant left,
    5
    an airline employee suspected that the cartons contained contraband and, upon
    opening one of the cartons, found several brick-shaped packages inside. The
    employee, believing he had discovered marijuana in one of the packages,
    telephoned the police. When the officer arrived, the carton remained open, and the
    officer could see the same brick-shaped packages. The officer ―formed the
    opinion that the substance in the packages was marijuana. He proceeded to open
    one of the packages, and verified its contents.‖ (Id. at p. 903.)
    This court, by a four-to-three majority, upheld the warrantless search and,
    in so doing, overruled a pair of four-to-three decisions issued three years earlier
    holding that when containers consigned for shipment are safely in the carrier‘s
    custody, there is no exigent circumstance justifying a warrantless search.
    (McKinnon, supra, 7 Cal.3d at p. 910, overruling People v. McGrew (1969) 
    1 Cal.3d 404
     (McGrew) and Abt v. Superior Court (1969) 
    1 Cal.3d 418
     (Abt).) The
    basis for the overruling, McKinnon said, was that the intervening high court
    decision in Chambers v. Maroney (1970) 
    399 U.S. 42
     (Chambers) ―undermine[d]
    the foundation of the majority opinions in McGrew and Abt.‖ (McKinnon, at
    p. 910.)
    In Chambers, the high court held that where police have probable cause to
    stop and search a car without a warrant, a subsequent search of the car after it has
    been driven to a police station is also permissible without a warrant. (Chambers,
    supra, 399 U.S. at pp. 51–52.) Chambers observed that the high court had long
    adhered to the rule that a warrantless search of an automobile is permissible so
    long as the police have probable cause to believe the car contains evidence or
    contraband. (Id. at p. 48, citing Carroll v. United States (1925) 
    267 U.S. 132
    (Carroll).) This exception to the warrant requirement, Chambers said, is justified
    by the ease with which an automobile might be moved out of the jurisdiction
    before a warrant can be obtained. (Chambers, at pp. 48, 51.) Although Chambers
    6
    recognized that the problem of mobility might be solved by first seizing the car
    and then seeking a search warrant, the high court declined to adopt such a rule:
    ―For constitutional purposes, we see no difference between on the one hand
    seizing and holding a car before presenting the probable cause issue to a
    magistrate and on the other hand carrying out an immediate search without a
    warrant. Given probable cause to search, either course is reasonable under the
    Fourth Amendment. [¶] . . . The probable-cause factor still obtained at the station
    house and so did the mobility of the car unless the Fourth Amendment permits a
    warrantless seizure of the car and the denial of its use to anyone until a warrant is
    secured. In that event there is little to choose in terms of practical consequences
    between an immediate search without a warrant and the car‘s immobilization until
    a warrant is obtained.‖ (Id. at p. 52.)
    The court in McKinnon said ―the rationale of Chambers‖ is not ―limited to
    searches of automobiles and similar self-propelled ‗vehicles‘ such as trucks, trains,
    boats, or airplanes.‖ (McKinnon, supra, 7 Cal.3d at p. 908.) McKinnon stated:
    ―[W]henever [a container] is consigned to a common carrier, there can be no doubt
    that it is intended, in fact, to be moved.‖ (Id. at p. 909.) Because ―all goods or
    chattels consigned to a common carrier for shipment‖ are ―no less movable than
    an automobile,‖ the court said, ―the reasons for the rule permitting a warrantless
    search of a vehicle upon probable cause are equally applicable to the search of
    such a chattel.‖ (Ibid.) The court assigned ―no constitutional relevance‖ to the
    fact that the cartons were already in the carrier‘s safe custody: ―In Chambers the
    defendants‘ automobile was seized by police officers and impounded at the police
    station; if the high court can say, as it does, that under those circumstances ‗the
    mobility of the car‘ still obtained at the station house [citation], a fortiori a chattel
    such as here involved remains ‗mobile‘ in the constitutional sense despite its
    limited and voluntary bailment to a common carrier.‖ (McKinnon, at p. 910.)
    7
    McKinnon thus held that ―when the police have probable cause to believe a chattel
    consigned to a common carrier contains contraband, they must be entitled either
    (1) to search it without a warrant or (2) to ‗seize‘ and hold it until they can obtain a
    warrant; absent these remedies, the chattel will be shipped out of the jurisdiction
    or claimed by its owner or by the consignee.‖ (Id. at p. 909.)
    Three justices dissented in an opinion by Justice Peters. While
    acknowledging that the court was ―bound‖ by Chambers, Justice Peters said
    ―Chambers, however, does not purport to apply to everything that is not nailed
    down or affixed to realty. The Supreme Court‘s opinion is closely tied to a long
    series of cases involving one and only one form of movable object — that which is
    used as a vehicle to transport goods from one place to another.‖ (McKinnon,
    supra, 7 Cal.3d at p. 920 (dis. opn. by Peters, J.).) Responding to the court‘s
    assertion that a container consigned for shipment ―remains ‗mobile‘ in the
    constitutional sense despite its limited and voluntary bailment to a common
    carrier‖ (id. at p. 910), Justice Peters said: ―Indeed, chattels will retain their
    movable character anywhere, whether within a depot, dwelling house, or concrete
    vault as well as an airport, unless they are affixed to realty or otherwise rendered
    nonmovable. The point is not that the chattels here involved were within the
    custody of the airlines, but that they were not in a vehicle capable of moving them
    beyond the jurisdiction on its own power; i.e., they had not entered the course of
    transportation. Drawing a line at goods physically aboard a carrier at least has the
    virtue of certainty. This is the line drawn by the United States Supreme Court in
    case after case. If all things movable could be searched without a warrant if there
    were probable cause to believe they contained evidence or contraband, the Fourth
    Amendment would be rendered nugatory, and in effect the search without a
    warrant would become the rule rather than the exception.‖ (Id. at p. 923 (dis. opn.
    by Peters, J.).)
    8
    The central premise of McKinnon — the reason it gave for overruling
    McGrew and Abt — is that the high court‘s decision in Chambers, though
    involving an automobile search, stands for the broader principle that not only cars
    but also ― ‗other things readily moved‘ ‖ are subject to warrantless search upon
    probable cause. (McKinnon, supra, 7 Cal.3d at p. 909, italics omitted.) Indeed,
    the McKinnon court appeared to treat automobiles as simply one kind of movable
    container: ―To be sure, [a box consigned for shipment] has neither wheels nor
    motive power; but these features of an automobile are legally relevant only insofar
    as they make it movable despite its dimensions. A box, which is a fraction of the
    size and weight of an automobile, is movable without such appurtenances.‖ (Id. at
    p. 909.) According to McKinnon, a package consigned for shipment falls under
    the same rule as an automobile: its mobility renders it subject to a warrantless
    search either on the spot or at the station house.
    However, during the more than four decades since Chambers was decided,
    the high court has never extended the rationale of that decision in the manner that
    McKinnon did. To the contrary, as we explain below, subsequent cases treat
    Chambers as part of line of authority specifically addressing automobile searches,
    and the high court has repeatedly held that a movable container suspected to hold
    evidence or contraband is subject to a warrantless search if the container is located
    inside an automobile. Outside the context of an automobile search, the high court
    has not applied the rationale of Chambers, Carroll, or any other authority to hold
    that the mobility of a container by itself constitutes an exigent circumstance
    justifying a warrantless search. Instead, the settled rule is that ―[e]ven when
    government agents may lawfully seize such a package to prevent loss or
    destruction of suspected contraband, the Fourth Amendment requires that they
    obtain a warrant before examining the contents of such a package.‖ (Jacobsen,
    supra, 466 U.S. at p. 114.) The development of the law since McKinnon
    9
    undermines its reliance on Chambers as a basis for extending the well-delineated
    automobile exception to ―all goods or chattels consigned to a common carrier for
    shipment.‖ (McKinnon, at p. 909.)
    B.
    Seven years after Chambers, the high court decided United States v.
    Chadwick (1977) 
    433 U.S. 1
     (Chadwick), which considered the warrantless search
    of a container seized from an automobile. In Chadwick, federal agents learned of
    two passengers transporting a suspicious footlocker by rail and met the train at its
    destination along with a police dog trained to detect marijuana. Without alerting
    the suspects, the dog signaled the presence of drugs in the footlocker. The officers
    continued to observe the suspects as they loaded the footlocker into the trunk of a
    waiting automobile. At that point, before the car engine was started, the officers
    arrested the men and seized the footlocker, transporting it to the station house.
    There the officers opened the locked footlocker without a warrant and discovered
    marijuana inside. (See 
    id.
     at pp. 3–5.)
    Although the footlocker was seized from an automobile, the high court held
    that the automobile exception did not apply. (Chadwick, 
    supra,
     433 U.S. at
    pp. 11–13.) The court explained that the ―footlocker‘s mobility [does not] justify
    dispensing with the added protections of the Warrant Clause. Once the federal
    agents had seized it at the railroad station and had safely transferred it to the
    Boston Federal Building under their exclusive control, there was not the slightest
    danger that the footlocker or its contents could have been removed before a valid
    search warrant could be obtained. The initial seizure and detention of the
    footlocker, the validity of which respondents do not contest, were sufficient to
    guard against any risk that evidence might be lost. With the footlocker safely
    immobilized, it was unreasonable to undertake the additional and greater intrusion
    of a search without a warrant.‖ (Id. at p. 13, fn. omitted.)
    10
    Relying on ―the rationale of [the high court‘s] automobile search cases,‖ the
    government argued that ―luggage [is] analogous to motor vehicles for Fourth
    Amendment purposes.‖ (Chadwick, 
    supra,
     433 U.S. at pp. 11–12.) The high
    court acknowledged the automobile search cases, including Chambers, but then
    rejected the analogy on several grounds. Whereas a footlocker may be ―safely
    immobilized‖ upon seizure, ―[t]his may often not be the case when automobiles
    are seized. Absolutely secure storage facilities may not be available, [citation],
    and the size and inherent mobility of a vehicle make it susceptible to theft or
    intrusion by vandals.‖ (Id. at p. 13 & fn. 7.) Moreover, even where ― ‗the
    possibilities of the vehicle‘s being removed or evidence in it destroyed [are]
    remote, if not nonexistent,‘ ‖ a warrantless search is justified by ―the diminished
    expectation of privacy which surrounds the automobile.‖ (Id. at p. 12.) A person
    has a diminished expectation of privacy in an automobile because ― ‗its function is
    transportation[,] . . . it seldom serves as one‘s residence or as the repository of
    personal effects[,] [i]t travels public thoroughfares where both its occupants and its
    contents are in plain view‘ ‖ (id. at p. 12), and both vehicles and drivers are
    subject to extensive regulation by states and localities (id. at p. 13). By contrast,
    ―a person‘s expectations of privacy in personal luggage are substantially greater
    than in an automobile.‖ (Id. at p. 13.) Finally, ―[i]t was the greatly reduced
    expectation of privacy in the automobile, coupled with the transportation function
    of the vehicle, which made the Court in Chambers unwilling to decide whether an
    immediate search of an automobile, or its seizure and indefinite immobilization,
    constituted a greater interference with the rights of the owner. This is clearly not
    the case with locked luggage.‖ (Id. at pp. 13–14, fn. 8; see 
    ibid.
     [―[a] search of the
    interior was . . . a far greater intrusion into Fourth Amendment values than the
    impoundment of the footlocker‖ even though the impoundment infringed on the
    owners‘ use and possession].)
    11
    Two years later, the high court in Arkansas v. Sanders (1979) 
    442 U.S. 753
    (Sanders) applied the rule in Chadwick to a suitcase found in ―an automobile
    lawfully stopped and searched on the street.‖ (Sanders, at p. 762.) As in
    Chadwick, the police in Sanders had information that the respondent was carrying
    drugs in his luggage. The police met him at the airport and observed as he placed
    his luggage in the trunk of a taxi and departed the airport. The police followed,
    stopping the taxi several blocks later. An officer opened the trunk and unlocked
    the suitcase without a warrant to discover marijuana inside. (See id. at p. 755.)
    After citing its automobile search cases, including Chambers, and affirming
    the distinctions drawn in Chadwick between luggage and automobiles, the high
    court in Sanders said: ―A closed suitcase in the trunk of an automobile may be as
    mobile as the vehicle in which it rides. But as we noted in Chadwick, the exigency
    of mobility must be assessed at the point immediately before the search — after
    the police have seized the object to be searched and have it securely within their
    control. [Citation.] Once police have seized a suitcase, as they did here, the
    extent of its mobility is in no way affected by the place from which it was taken.
    Accordingly, as a general rule there is no greater need for warrantless searches of
    luggage taken from automobiles than of luggage taken from other places.‖
    (Sanders, supra, 442 U.S. at pp. 763–764, fns. omitted.) Thus Sanders, like
    Chadwick, recognized a general rule that movable containers, once lawfully
    seized, may not be searched without a warrant and declined to carve out an
    exception for luggage seized from an automobile. (See Sanders, at p. 766 [―In
    sum, we hold that the warrant requirement of the Fourth Amendment applies to
    personal luggage taken from an automobile to the same degree it applies to such
    luggage in other locations. Thus, insofar as the police are entitled to search such
    luggage without a warrant, their actions must be justified under some exception to
    12
    the warrant requirement other than that applicable to automobiles stopped on the
    highway.‖].)
    The high court in Sanders rejected the state‘s argument that under
    Chambers, ―if the police were entitled to seize the suitcase, then they were entitled
    to search it.‖ (Sanders, 
    supra,
     442 U.S. at p. 765, fn. 14.) The court saw ―the
    seizure of a suitcase as quite different from the seizure of an automobile. In
    Chambers, if the Court had required seizure and holding of the vehicle, it would
    have imposed a constitutional requirement upon police departments of all sizes
    around the country to have available the people and equipment necessary to
    transport impounded automobiles to some central location until warrants could be
    secured. Moreover, once seized automobiles were taken from the highway the
    police would be responsible for providing some appropriate location where they
    could be kept, with due regard to the safety of the vehicles and their contents, until
    a magistrate ruled on the application for a warrant. Such a constitutional
    requirement therefore would have imposed severe, even impossible, burdens on
    many police departments. [Citation.] No comparable burdens are likely to exist
    with respect to the seizure of personal luggage.‖ (Ibid.)
    Three years after Sanders, the high court in United States v. Ross (1982)
    
    456 U.S. 798
     (Ross) held that where police have probable cause to search an
    automobile without a warrant, the search may encompass not only a closed
    compartment such as a glove box, but also any containers or packages found
    inside the vehicle. Applying the principle that ―[t]he scope of a warrantless search
    based on probable cause is no narrower — and no broader — than the scope of a
    search authorized by a warrant supported by probable cause,‖ Ross explained that
    ―[t]he scope of a warrantless search of an automobile is . . . not defined by the
    nature of the container in which the contraband is secreted. Rather, it is defined
    by the object of the search and the places in which there is probable cause to
    13
    believe that it may be found.‖ (Id. at pp. 823–824.) ―If probable cause justifies
    the search of a lawfully stopped vehicle, it justifies the search of every part of the
    vehicle and its contents that may conceal the object of the search.‖ (Id. at p. 825.)
    The high court in Ross had occasion to review its automobile search cases,
    and it clarified that the justification for searching an automobile without a warrant
    is not strictly based on exigency: ―although a failure to seize a moving automobile
    believed to contain contraband might deprive officers of the illicit goods, once a
    vehicle itself has been stopped the exigency does not necessarily justify a
    warrantless search.‖ (Ross, 
    supra,
     456 U.S. at p. 807, fn. 9, citing Chambers,
    
    supra,
     399 U.S. at pp. 62–64 (conc. & dis. opn. by Harlan, J.).) With regard to
    Chambers‘s holding that a vehicle may be searched without a warrant after it has
    been impounded if it could have been searched on the spot, Ross explained that the
    rule is ―based on the practicalities of the situations presented and a realistic
    appraisal of the relatively minor protection that a contrary rule would provide for
    privacy interests. Given the scope of the initial intrusion caused by a seizure of an
    automobile — which often could leave the occupants stranded on the highway —
    the Court [in Chambers] rejected an inflexible rule that would force police officers
    in every case either to post guard at the vehicle while a warrant is obtained or to
    tow the vehicle itself to the station. Similarly, if an immediate search on the scene
    could be conducted, but not one at the station if the vehicle is impounded, police
    often simply would search the vehicle on the street — at no advantage to the
    occupants, yet possibly at certain cost to the police.‖ (Ross, at p. 807, fn. 9.)
    Further, the high court in Ross distinguished Chadwick and Sanders.
    Whereas Ross involved the search of a container found inside a car where ―police
    officers had probable cause to search respondent‘s entire vehicle‖ (Ross, supra,
    456 U.S. at p. 817), Chadwick and Sanders were cases where police had probable
    cause to believe only that the luggage — and not ―the vehicle or anything [else]
    14
    within it‖ — contained contraband. (Ross, at p. 814; see id. at p. 824 [―Probable
    cause to believe that a container placed in the trunk of a taxi contains contraband
    or evidence does not justify a search of the entire cab.‖].) In concluding that ―an
    individual‘s expectation of privacy in a vehicle and its contents may not survive if
    probable cause is given to believe that the vehicle is transporting contraband‖ (id.
    at p. 823, italics added), Ross ―reject[ed] some of the reasoning in Sanders‖
    broadly suggesting that ―a warrantless search of a container found in an
    automobile could never be sustained as part of a warrantless search of the
    automobile itself‖ (Ross, at pp. 814, 824). Ross also said, in tension with
    Chadwick‘s statement concerning diminished privacy expectations in cars, that
    ―[c]ertainly the privacy interests in a car‘s trunk or glove compartment may be no
    less than those in a movable container‖ yet ―[t]hese interests must yield to the
    authority of a search . . . .‖ (Ross, at p. 823.) But the high court continued to
    adhere to the holdings in Sanders and Chadwick because those cases, unlike Ross,
    involved probable cause to search only a container and not the car where the
    container was found. (Ross, at pp. 809–814, 824.)
    Finally, California v. Acevedo (1991) 
    500 U.S. 565
     (Acevedo) dispensed
    with the ―dichotomy between the rule in Chadwick and the rule in Ross,‖ which
    ―dictate[d] that if there is probable cause to search a car, then the entire car —
    including any closed container found therein — may be searched without a
    warrant, but if there is probable cause only as to a container in the car, the
    container may be held but not searched until a warrant is obtained.‖ (Acevedo, at
    p. 568.) Explaining that ―Sanders was explicitly undermined in Ross‖ and that
    ―the dual regimes for automobile searches that uncover containers has proved . . .
    confusing‖ for courts and police officers, the high court concluded that ―it is better
    to adopt one clear-cut rule to govern automobile searches and eliminate the
    warrant requirement for closed containers set forth in Sanders.‖ (Id. at p. 579.)
    15
    Acevedo held: ―The police may search an automobile and the containers within it
    where they have probable cause to believe contraband or evidence is contained.‖
    (Id. at p. 580.) The high court thus extended the rule in Ross for searching a
    container found in the course of a lawful automobile search ―to all searches of
    containers found in an automobile,‖ including a search supported only by probable
    cause that the container, and not the car, holds evidence or contraband. (Id. at
    p. 579.) In so holding, Acevedo overruled Chadwick and Sanders on that point.
    (Id. at pp. 576–579.)
    C.
    The case law on automobile searches, from Carroll to Chambers to
    Acevedo, reveals that the rationale for allowing a vehicle to be searched without a
    warrant is rooted in practical concerns unique to automobiles. Further, the
    rationale for allowing any containers located in a vehicle to be searched without a
    warrant is also specific to the automobile context. As we now explain, these
    rationales are distinct, and neither supports the analogy drawn in McKinnon
    between automobiles and packages consigned for shipment.
    1.
    As noted, McKinnon said that because ―all goods or chattels consigned to a
    common carrier for shipment . . . are no less movable than an automobile, the
    reasons for the rule permitting a warrantless search of a vehicle upon probable
    cause are equally applicable to the search of such a chattel.‖ (McKinnon, supra, 7
    Cal.3d at p. 909.) In concluding that ―a chattel . . . remains ‗mobile‘ in the
    constitutional sense despite its limited and voluntary bailment to a common
    carrier,‖ McKinnon relied on Chambers‘s statement that the mobility of a car ―still
    obtain[s]‖ after it has been seized. (McKinnon, at p. 910, citing Chambers, 
    supra,
    399 U.S. at p. 52.) In Ross, however, the high court acknowledged that this
    statement in Chambers was something of a legal fiction. Although exigent
    16
    circumstances may justify seizing a moving automobile without a warrant, Ross
    explained, ―once a vehicle itself has been stopped the exigency does not
    necessarily justify a warrantless search.‖ (Ross, 
    supra,
     456 U.S. at p. 807, fn. 9,
    citing Chambers, at pp. 62–64 (conc. & dis. opn. by Harlan, J.).) Ross clarified
    that the reason for permitting a warrantless search of a lawfully stopped vehicle is
    not that the vehicle retains its mobility, but that the ―practicalities‖ of ―forc[ing]
    police officers in every case either to post guard at the vehicle while a warrant is
    obtained or to tow the vehicle itself to the station‖ — ―which often could leave the
    occupants stranded on the highway‖ — are too burdensome to justify a rule
    allowing police, upon probable cause, only to seize but not to search a vehicle
    without a warrant. (Ross, at p. 807, fn. 9.)
    Ross echoed Sanders‘s concern that such a rule would require ―police
    departments of all sizes around the country to have available the people and
    equipment necessary to transport impounded automobiles to some central location
    until warrants could be secured. Moreover, once seized automobiles were taken
    from the highway the police would be responsible for providing some appropriate
    location where they could be kept, with due regard to the safety of the vehicles and
    their contents, until a magistrate ruled on the application for a warrant. Such a
    constitutional requirement therefore would have imposed severe, even impossible,
    burdens on many police departments.‖ (Sanders, supra, 442 U.S. at p. 765–766,
    fn. 14; see also Chadwick, 
    supra,
     433 U.S. at p. 13, fn. 7 [noting difficulty of
    providing ―[a]bsolutely secure storage facilities‖ for automobiles].) Sanders
    observed that these practical concerns limit the rationale of Chambers to
    automobiles (Sanders, at p. 765, fn. 14), and it is notable that after Sanders and
    Ross, the high court in Acevedo did not explain the holding in Chambers on the
    basis of a vehicle‘s continuing mobility after it has been seized. (See Acevedo,
    
    supra,
     500 U.S. at pp. 569–570.) Instead, Acevedo explained that the later
    17
    warrantless search at the police station in Chambers ―derived from‖ the authority
    to conduct ―an immediate search without a warrant at the moment of seizure‖
    (Acevedo, at p. 570) — authority that stems from the practical difficulties of
    transporting and securely storing an automobile pending issuance of a search
    warrant. (See 
    ibid.
     [describing Chambers as having ―reasoned . . . that the police
    could search later whenever they could have searched earlier, had they so
    chosen‖].)
    The high court‘s refinement of the rationale for Chambers‘s holding
    undermines McKinnon‘s purported analogy between automobiles and containers
    consigned for shipment. The analogy rests on McKinnon‘s observation that such
    containers ―are no less movable than an automobile.‖ (McKinnon, supra, 7 Cal.3d
    at p. 909.) But it is clear from Sanders and Ross that the justification for a
    warrantless search of an automobile after it has been lawfully stopped turns not on
    its continuing mobility but instead on the practical difficulties of towing, storing,
    and securing a car, and providing for the safety of its stranded occupants, pending
    the issuance of a search warrant. Such difficulties do not generally apply to
    packages consigned for shipment, and there is no evidence in the record before us
    that the police had any difficulty in bringing the FedEx package to the police
    station and securely storing it there pending issuance of a search warrant.
    In sum, absent unusual circumstances where transporting or storing a
    container poses practical difficulties for law enforcement, the concerns justifying
    an immediate warrantless search of a lawfully stopped automobile do not apply to
    packages consigned for shipment. In this case, there is no dispute as to whether
    the police lawfully seized the package without a warrant. Because there was no
    justification for an immediate search of the package once it was seized, the police
    had no derivative authority to search the package later at the police station without
    a warrant.
    18
    2.
    Nor do the container searches upheld in Ross and Acevedo lend credence to
    McKinnon‘s theory that the mobility of packages consigned for shipment provides
    a basis for a warrantless search. Neither Ross nor Acevedo relied on the mobility
    of a container found in an automobile as the ground for upholding a warrantless
    search.
    In Ross, the high court held that when police have probable cause to believe
    a vehicle is carrying evidence or contraband, the scope of a search may extend to
    ―every part of the vehicle that might contain the object of the search,‖ including
    the glove compartment, the trunk, and even the upholstery. (Ross, 
    supra,
     456 U.S.
    at p. 821; see 
    id.
     at pp. 804–805 [Carroll upheld a search where police tore open a
    car‘s upholstery to find contraband].) Ross saw no distinction between the closed
    compartments of a car and a closed container found in a car in terms of their utility
    for stowing contraband or the privacy interests affected. (Ross, at pp. 820–821,
    823.) If a car‘s closed compartments may be opened without a warrant during a
    lawful vehicle search, the high court reasoned, then closed containers found during
    a lawful vehicle search may be opened as well. (Id. at p. 824 [scope of automobile
    search ―is not defined by the nature of the container in which the contraband is
    secreted‖ but ―by the object of the search and the places in which there is probable
    cause to believe that it may be found‖].)
    In reaching this holding, Ross nowhere suggested that seizing or storing a
    container posed any of the practical difficulties associated with towing and
    impounding an automobile pending issuance of a search warrant. But Ross did
    rely on practical concerns unique to containers found in the course of a lawful
    automobile search. In rejecting a rule that would allow police to search the entire
    vehicle but require any containers found to be taken to a magistrate, Ross observed
    that ―prohibiting police from opening immediately a container in which the object
    19
    of the search is most likely to be found and instead forcing them first to comb the
    entire vehicle would actually exacerbate the intrusion on privacy interests.
    Moreover, until the container itself was opened the police could never be certain
    that the contraband was not secreted in a yet undiscovered portion of the vehicle;
    thus in every case in which a container was found, the vehicle would need to be
    secured while a warrant was obtained.‖ (Ross, supra, 456 U.S. at p. 821, fn. 28.)
    It is thus apparent that Ross‘s reasoning applies specifically to containers found
    during an automobile search and not to movable containers generally.
    The same is true of Acevedo. In allowing police to open a container in a car
    where probable cause extends only to the container and not the car, Acevedo, like
    Ross, did not rely on the mobility of such containers or on any suggestion that
    containers pose the kind of practical problems associated with seizing and storing
    an automobile pending a search warrant. Instead, the high court explained that
    having held in Ross that police may open a container found in the course of a
    general vehicle search, it could see ―no principled distinction‖ between such a
    container and ―a container found in a car after a limited search for the container.‖
    (Acevedo, 
    supra,
     500 U.S. at p. 574; see 
    ibid.
     [both types of containers ―are
    equally easy for the police to store and for the suspect to hide or destroy‖].) As in
    Ross, the high court in Acevedo said that prohibiting police from opening a
    container found in a car may ―disserve privacy interests.‖ (Acevedo, at p. 574.)
    ―At the moment when officers stop an automobile, it may be less than clear
    whether they suspect with a high degree of certainty that the vehicle contains
    drugs in a bag or simply contains drugs. If the police know that they may open a
    bag only if they are actually searching the entire car, they may search more
    extensively than they otherwise would in order to establish the general probable
    cause required by Ross. [¶] . . . We cannot see the benefit of a rule that requires
    20
    law enforcement officers to conduct a more intrusive search in order to justify a
    less intrusive one.‖ (Id. at pp. 574–575.)
    With this passage and others, Acevedo made clear that its rationale and
    holding pertained specifically to containers in the context of automobile searches.
    In rejecting the relevance of cases concerning other container searches, Acevedo
    said: ―From Carroll through Ross, this Court has explained that automobile
    searches differ from other searches.‖ (Acevedo, supra, 500 U.S. at p. 578.)
    Further, the court said: ―Our holding today neither extends the Carroll doctrine
    nor broadens the scope of the permissible automobile search delineated in Carroll,
    Chambers, and Ross. It remains a ‗cardinal principle that ―searches conducted
    outside the judicial process, without prior approval by judge or magistrate, are per
    se unreasonable under the Fourth Amendment — subject only to a few specifically
    established and well-delineated exceptions.‖ ‘ [Citation.] We held in Ross: ‗The
    exception recognized in Carroll is unquestionably one that is ―specifically
    established and well delineated.‖ ‘ [Citation.]‖ (Acevedo, at p. 580.) And perhaps
    most pointedly, Acevedo explained its holding as follows: ―Until today, this Court
    has drawn a curious line between the search of an automobile that coincidentally
    turns up a container and the search of a container that coincidentally turns up in an
    automobile. The protections of the Fourth Amendment must not turn on such
    coincidences. We therefore interpret Carroll as providing one rule to govern all
    automobile searches.‖ (Ibid., italics added.)
    Thus, in overruling Chadwick and Sanders, Acevedo rejected the view that
    containers found in cars are subject to the same Fourth Amendment rules that
    apply to container searches generally. However, in bringing all containers found
    in cars within the ambit of the automobile exception, Acevedo expressly limited its
    holding to automobile searches and did not disturb the general rule that a warrant
    is required to search a lawfully seized container. Nothing in the automobile-
    21
    specific reasoning of Ross and Acevedo invites an extension of those holdings to
    permit the warrantless search of a sealed package consigned for shipment.
    D.
    In the midst of developing its jurisprudence on container searches in the
    context of automobiles, the high court had occasion to consider the applicability of
    the Fourth Amendment to containers outside of the automobile context. (See
    Jacobsen, 
    supra,
     
    466 U.S. 109
    ; United States v. Place (1983) 
    462 U.S. 696
    (Place).) These cases confirm that a warrant is required to search a package
    consigned for shipment once it has been lawfully seized.
    In Place, federal agents met a suspicious airline passenger at his destination
    and asked to search his luggage. (Place, 
    supra,
     462 U.S. at p. 698.) When the
    passenger refused, the agents seized his bags and transported them to another
    location for a ―sniff test‖ by a narcotics detection dog. Ninety minutes later, the
    test was performed, and the dog alerted to one of the bags, whereupon the agents
    obtained a search warrant, opened the bag, and discovered cocaine. (Id. at p. 699.)
    The high court held that the officer‘s reasonable suspicion justified an
    investigative detention of the luggage and that the canine sniff did not constitute a
    search under the Fourth Amendment. (Id. at pp. 706–707.) But the court also held
    that the 90-minute detention of the suspect‘s luggage in order to conduct the sniff
    test exceeded the permissible scope of the investigative detention. (Id. at pp. 709–
    710.)
    In setting forth the applicable principles, Place said: ―Where law
    enforcement authorities have probable cause to believe that a container holds
    contraband or evidence of a crime, but have not secured a warrant, the Court has
    interpreted the Amendment to permit seizure of the property, pending issuance of
    a warrant to examine its contents, if the exigencies of the circumstances demand it
    or some other recognized exception to the warrant requirement is present.‖
    22
    (Place, supra, 462 U.S. at p. 701, italics added.) In other words, exigent
    circumstances can justify the seizure of a container without a warrant, but the
    container, once seized, cannot be searched without ―issuance of a warrant to
    examine its contents.‖ (Ibid.) In support of this general rule, Place cited Sanders
    and Chadwick. As noted, Acevedo overruled Sanders and Chadwick insofar as
    they applied the warrant requirement to containers found in cars. But Acevedo, in
    exempting containers found in cars, did not call into question the general rule for
    container searches that was stated by Place and recognized by Sanders and
    Chadwick. (See ante, at pp. 20–21.) Indeed, even as it overruled Sanders and
    Chadwick with respect to container searches in the automobile context, Acevedo
    distinguished Place on the ground that Place ―did not involve an automobile at
    all.‖ (Acevedo, 
    supra,
     500 U.S. at p. 577; see id. at p. 578 [―Place had nothing to
    do with the automobile exception and is inapposite.‖].) The general rule stated by
    Place thus remains good law.
    One year after Place, the high court decided Jacobsen, 
    supra,
     
    466 U.S. 109
    .
    In that case, FedEx employees opened a package that had been damaged by a
    forklift. Upon discovering plastic bags with white powder packed inside a tube
    with crumpled newspaper, the employees notified law enforcement. When a
    federal agent arrived, he found the package with the top open and one end of the
    tube slit open. He removed the plastic bags from the tube and saw the white
    powder. He then opened the bags and conducted a field test that identified the
    powder as cocaine. (See 
    id.
     at pp. 111–112.)
    The high court held that the initial opening of the package by the FedEx
    employees ―did not violate the Fourth Amendment because of their private
    character.‖ (Jacobsen, 
    supra,
     466 U.S. at p. 115.) The court then held that
    because the private search had eliminated any privacy interest in the contents of
    the package, the agent‘s handling of the package and its contents was lawful
    23
    insofar as it did not exceed the scope of the private search. (Id. at p. 119 [agent‘s
    ―manual inspection of the tube and its contents‖ did ―not tell him anything more
    than he already had been told‖ by the FedEx employees]; id. at p. 121 [seizure was
    reasonable because ―respondents‘ privacy interest in the contents of the package
    had been largely compromised . . .‖].) Finally, the court held that ―[a] chemical
    test that merely discloses whether or not a particular substance is cocaine does not
    compromise any legitimate interest in privacy.‖ (Id. at p. 123.)
    Jacobsen prefaced its analysis with the following precepts: ―When the
    wrapped parcel involved in this case was delivered to the private freight carrier, it
    was unquestionably an ‗effect‘ within the meaning of the Fourth Amendment.
    Letters and other sealed packages are in the general class of effects in which the
    public at large has a legitimate expectation of privacy; warrantless searches of
    such effects are presumptively unreasonable. Even when government agents may
    lawfully seize such a package to prevent loss or destruction of suspected
    contraband, the Fourth Amendment requires that they obtain a warrant before
    examining the contents of such a package. Such a warrantless search could not be
    characterized as reasonable simply because, after the official invasion of privacy
    occurred, contraband is discovered.‖ (Jacobsen, supra, 466 U.S. at p. 114, italics
    added and fns. omitted.) In support of the italicized rule, the high court cited
    Place as well as Ross, Sanders, and Chadwick. (Jacobsen, at p. 114, fn. 8.)
    Jacobsen‘s affirmation of the general rule casts further doubt on McKinnon
    because if the mobility of a container consigned for shipment were enough to
    justify a warrantless search, as McKinnon held, then Jacobsen‘s entire analysis
    upholding the agent‘s inspection of the package and its contents would have been
    unnecessary.
    Since Jacobsen, the issue of whether a package consigned for shipment
    may be searched without a warrant appears to have arisen infrequently, and the
    24
    few reported cases on point have concluded that a warrant is required. In Daniels
    v. Cochran (Fla.Dist.Ct.App. 1995) 
    654 So.2d 609
     (Daniels), a police officer
    opened a package to which a drug-sniffing dog alerted during ―routine package
    checks on a conveyor belt at a Federal Express office.‖ (Id. at p. 611.) The court
    held that ―[w]hile [the officer] may have been entitled to seize the package based
    on the dog‘s alert without a warrant, his opening of the package without a warrant
    violated the Fourth Amendment . . . .‖ (Id. at p. 613.) Distinguishing Acevedo‘s
    exception for warrantless searches of automobiles and their contents, the court said
    that ―a canine sniff which alerts to a package does not eliminate the requirement
    that, absent exigent circumstances, consent or other recognized exceptions, a
    search warrant must be obtained before a search of the contents of the package
    passes constitutional muster. See [Place, 
    supra,
     462 U.S. at pp. 706–707].‖
    (Daniels, at p. 613.)
    In Seeley v. State (Ala.Crim.App. 1995) 
    669 So.2d 209
     (Seeley), a FedEx
    employee, Kaufmann, opened an undeliverable box and found a tubular package
    inside. He did not open the tube but squeezed it, felt a powdery substance he
    suspected to be drugs, and called the police. An officer, Ware, arrived with a
    drug-sniffing dog that alerted to the tube. The officer then took the tube to his
    office. There, he opened it and performed a test on the powder that indicated the
    presence of cocaine. (Id. at p. 211.) The court invalidated the search: ―Under
    Jacobsen, Ware exceeded the scope of Kaufmann‘s search when he cut open the
    tube in the appellant‘s package without a search warrant. Jacobsen establishes
    that a legitimate expectation of privacy exists in sealed packages sent by common
    carrier and that a warrantless government search cannot exceed what was carried
    out by private parties. Ware should have obtained a search warrant before cutting
    open the tubular package that contained cocaine. Ware had probable cause to
    obtain a search warrant based on his observations and the results of the ‗sniff test‘
    25
    by the narcotics detection dog. Because Ware had dominion and control over the
    package, there was little chance of loss or destruction of the package. There were
    no exigent circumstances that justified opening the package before obtaining a
    search warrant.‖ (Id. at pp. 213–214.)
    In contrast to the warrantless searches held unlawful in Daniels and Seeley,
    the conduct of law enforcement in many other cases suggests that it is common
    practice, consistent with Place and Jacobsen, to obtain a warrant before searching
    a container consigned for shipment. (See, e.g., United States v. Robinson (6th Cir.
    2004) 
    390 F.3d 853
    , 858–859 [police obtained a warrant to open a package in
    shipment that smelled of marijuana]; Unites States v. Logan (8th Cir. 2004) 
    362 F.3d 530
    , 531–532 [police obtained a warrant to open a package at a mailbox
    facility after narcotics dog alerted to the package]; Unites States v. Morones (8th
    Cir. 2004) 
    355 F.3d 1108
    , 1109 [police obtained a warrant to search a package
    detained at a FedEx facility]; United States v. Smith (7th Cir. 1994) 
    34 F.3d 514
    ,
    516 [police obtained a warrant to search a FedEx package after a canine alert];
    United States v. Hall (10th Cir. 1994) 
    20 F.3d 1084
    , 1085 [same].)
    The District Attorney asserts, without citation to any authority, that
    McKinnon ―is still good law and has been followed by numerous courts.‖ In fact,
    there appear to be only two California cases that have applied McKinnon to uphold
    the warrantless search of a container based on its mobility, and both predate the
    development of the law in Chadwick, Sanders, Place, and Jacobsen. (See People
    v. Goodyear (1975) 
    54 Cal.App.3d 157
    , 162; People v. Superior Court (Reilly)
    (1975) 
    53 Cal.App.3d 40
    , 51–52.) To buttress McKinnon, the District Attorney
    relies on United States v. Johnston (9th Cir. 1974) 
    497 F.2d 397
    , which upheld the
    warrantless search of two suitcases on a departing train. But United States v.
    Johnston also predates the line of cases from Chadwick to Jacobsen. The District
    Attorney also relies on United States v. Johns (1985) 
    469 U.S. 478
     (Johns), which
    26
    applied Ross to uphold the delayed search of packages found in two lawfully
    seized pickup trucks. But because Johns is an automobile search case, it lends no
    support to McKinnon‘s holding for reasons already discussed.
    McKinnon‘s rule that the mobility of a container is itself sufficient to justify
    a warrantless search has not been followed by any appellate court in California for
    almost four decades. This is unsurprising in light of subsequent developments that
    have undermined McKinnon‘s analogy between the mobility of cars and the
    mobility of containers as the basis for a warrantless search. We conclude that
    McKinnon, supra, 
    7 Cal.3d 899
     is no longer to be followed on this point. A
    container consigned for shipment is subject to the same rule as other containers
    outside of the specific and well-delineated context of an automobile search: ―Even
    when government agents may lawfully seize such a package to prevent loss or
    destruction of suspected contraband, the Fourth Amendment requires that they
    obtain a warrant before examining the contents of such a package.‖ (Jacobsen,
    
    supra,
     466 U.S. at p. 114, fn. omitted; see Place, 
    supra,
     462 U.S. at p. 701.)
    In the present case, the mobility of the package constituted exigent
    circumstances justifying Officer Totorica‘s seizure of the FedEx package without
    a warrant so long as he had probable cause to believe it contained contraband. But
    seizure of the package by the police negated its mobility. Absent some other
    exception to the warrant requirement, the Fourth Amendment required the police
    to obtain a search warrant before opening the package after it had been seized.
    III.
    In addition to invoking exigent circumstances, the District Attorney argues
    that the plain smell of marijuana emanating from the package was, by itself,
    sufficient justification for the warrantless search. As we explain, however, we do
    not decide this issue because the District Attorney forfeited the argument by
    27
    failing to raise it in opposition to petitioner‘s suppression motion in the superior
    court.
    In order to understand our finding of forfeiture here, it is important to
    distinguish between two different legal claims involving the sense of smell. The
    first is that a distinctive odor can provide probable cause to believe that a closed
    container contains contraband. This proposition is well established by cases that
    have found the smell of contraband sufficient to establish the probable cause
    necessary for police to obtain a search warrant (see Johnson v. United States
    (1948) 
    333 U.S. 10
    , 13) or to conduct a search or seizure under the automobile or
    exigent circumstances exception to the warrant requirement (see People v. Cook
    (1975) 
    13 Cal.3d 663
    , 668–670, disapproved on other grounds by People v. Doolin
    (2009) 
    45 Cal.4th 390
    ; People v. Gale (1973) 
    9 Cal.3d 788
    , 794; United States v.
    McCoy (8th Cir. 2000) 
    200 F.3d 582
    , 584; United States v. Downs (10th Cir.
    1998) 
    151 F.3d 1301
    , 1303; U.S. v. Pierre (5th Cir. 1992) 
    958 F.2d 1304
    , 1310;
    Gilliam v. United States (D.C. 2012) 
    46 A.3d 360
    , 364; Dies v. State (Miss. 2006)
    
    926 So.2d 910
    , 918; People v. Kazmierczak (Mich. 2000) 
    605 N.W.2d 667
    , 672;
    State v. Moore (Ohio 2000) 
    734 N.E.2d 804
    , 807–808 & fns. 1, 2 [collecting
    cases]).
    The second claim is that the plain smell of marijuana by itself justifies the
    search of a container without a warrant, separate and apart from any other
    exception to the warrant requirement. Here the claim is not that the smell of
    marijuana can establish the probable cause necessary to obtain a warrant or to
    invoke an exception to the warrant requirement, but that the police simply do not
    need a warrant to search a package that reeks of marijuana. It is this claim that the
    District Attorney presses in this court but failed to raise in the superior court.
    In opposing petitioner‘s motion to suppress in the trial court, the District
    Attorney argued that the smell of marijuana constituted probable cause to support
    28
    the seizure and search of the package without a warrant in light of exigent
    circumstances arising from the package‘s mobility. In support of this argument,
    the District Attorney offered Officer Totorica‘s testimony that the package smelled
    of marijuana and that ―[t]he odor was stronger as I got closer to the package.‖
    Officer Totorica also testified that he smelled marijuana upon entering the store
    and that the entry was an ―estimated 25 feet‖ from the package, although these
    assertions were not included in his incident report. Lieutenant Haley similarly
    testified that ―there was a distinct odor of marijuana coming from [the package].‖
    Both officers said they were trained and experienced in smelling marijuana. The
    smell was also apparent to the store employee, Nancy Her, who did not indicate
    she had any special training.
    The trial court upheld the seizure of the package under the exigent
    circumstances exception to the warrant requirement, and this ruling is fairly
    understood to encompass a determination that the evidence adduced at the
    suppression hearing established probable cause that the package contained
    contraband. As noted, petitioner does not challenge the legality of the seizure —
    and for good reason: The trial court‘s implicit finding of probable cause is
    supported by substantial evidence, and the existence of probable cause, together
    with the exigent circumstance of the package‘s mobility, justified Officer
    Totorica‘s seizure of the package without a warrant. (See Place, 
    supra,
     462 U.S.
    at p. 701.) As for the subsequent search, the trial court upheld it on the basis of
    inevitable discovery, but the Court of Appeal rejected that theory and the District
    Attorney does not defend it here.
    After petitioner sought a writ of mandate in the Court of Appeal, the Court
    of Appeal on its own initiative issued a letter to the parties requesting an informal
    response to several questions, including the following: ―Do the courts recognize a
    ‗plain smell‘ doctrine that would have allowed the search and seizure of the
    29
    package without a warrant?‖ This was the first time in the case that the parties
    were asked to consider whether the smell of marijuana could alone provide an
    independent and sufficient basis for a warrantless search or seizure, and not just a
    basis for establishing probable cause. The District Attorney responded in the
    affirmative, and the parties proceeded to brief and argue this issue in the Court of
    Appeal. The Court of Appeal dedicated a significant portion of its opinion to
    rejecting the theory that the plain smell of marijuana can alone justify a
    warrantless search, and the District Attorney then sought our review on this issue.
    In this court, the District Attorney argues that the plain smell of marijuana
    negated any reasonable expectation of privacy in the package, drawing an analogy
    to the following dictum in a footnote from the United States Supreme Court‘s
    decision in Sanders: ―Not all containers and packages found by police during the
    course of a search will deserve the full protection of the Fourth Amendment.
    Thus, some containers (for example a kit of burglar tools or a gun case) by their
    very nature cannot support any reasonable expectation of privacy because their
    contents can be inferred from their outward appearance.‖ (Sanders, supra, 442
    U.S. at p. 765, fn. 13; see Robbins v. California (1981) 
    453 U.S. 420
    , 428 (plur.
    opn.) [―to fall within the [exception described in Sanders‘s footnote] a container
    must so clearly announce its contents, whether by its distinctive configuration, its
    transparency, or otherwise, that its contents are obvious to an observer‖], revd. on
    other grounds by Ross, 
    supra,
     
    456 U.S. 798
    .) Although some courts, relying on
    Sanders or Robbins, have held that the plain smell of contraband justifies the
    search of a closed container without a warrant (see United States v. Haley (4th Cir.
    1982) 
    669 F.2d 201
    , 204, fn. 3; United States v. Epps (11th Cir. 2010) 
    613 F.3d 1093
    , 1098), other courts have rejected this view (see United States v. Johns (9th
    Cir. 1983) 
    707 F.2d 1093
    , 1096, revd. on other grounds by Johns, supra, 469 U.S.
    at p. 487; United States v. Dien (2d Cir. 1979) 
    609 F.2d 1038
    , 1045). Since
    30
    Sanders, neither the United States Supreme Court nor this court has ever upheld a
    warrantless search of a closed container solely on the ground that its smell,
    appearance, or other outward characteristic clearly announced its contents. Thus,
    it is fair to say that the legal theory urged by the District Attorney is unsettled in
    the extant case law and novel in this court‘s jurisprudence.
    Although it is not improper for a reviewing court to decide the merits of an
    alternate ground for affirming the judgment of a trial court even if that ground was
    not argued by the parties below (see, e.g., People v. Robles (2000) 
    23 Cal.4th 789
    ,
    800–801 & fn. 7), we have cautioned that appellate courts should not consider a
    Fourth Amendment theory for the first time on appeal when ―the People‘s new
    theory was not supported by the record made at the first hearing and would have
    necessitated the taking of considerably more evidence‖ or when ―the defendant
    had no notice of the new theory and thus no opportunity to present evidence in
    opposition.‖ (Green v. Superior Court (1985) 
    40 Cal.3d 126
    , 137–138.) In this
    case, although the facts adduced at the suppression hearing were sufficient to
    establish probable cause that the package contained contraband, the evidence on
    the issue of smell was not extensive. Neither the District Attorney nor the defense
    offered evidence that provided any depth or detail concerning the intensity or other
    qualities of the smell detected by the officers. Nor does the record contain much
    information about the extent or limitations of the officers‘ training or experience in
    detecting marijuana through the sense of smell. Because the District Attorney did
    not raise the plain smell theory at the suppression hearing, the parties had no
    occasion to put forward the most probative evidence for or against the proposition
    that the plain smell of marijuana was, by itself, sufficient to justify the warrantless
    search. In light of the limited record before us, we decline to resolve whether the
    smell of marijuana can alone justify the warrantless search of a closed container
    and, if so, under what circumstances.
    31
    The way the plain smell issue arose in this case prompts us to caution
    appellate courts against proposing, on their own initiative, novel theories that the
    parties did not address in the course of litigating a motion to suppress in the trial
    court. Our admonition is rooted in principles of judicial restraint, which have
    particular salience when courts are confronted with unsettled constitutional issues.
    ― ‗In an emerging area of the law, we do well to tread carefully and exercise
    judicial restraint, deciding novel issues only when the circumstances require.‘ ‖
    (Matrixx Initiatives, Inc. v. Doe (2006) 
    138 Cal.App.4th 872
    , 881, quoting Mateel
    Environmental Justice Foundation v. Edmund A. Gray Co. (2003) 
    115 Cal.App.4th 8
    , 20, fn. 6.)
    CONCLUSION
    For the reasons above, we conclude that the seizure of the package was
    lawful but the warrantless search of the sealed package was not justified by
    exigent circumstances and that the District Attorney forfeited the argument that
    the plain smell of marijuana alone justified the search without a warrant. Because
    the Court of Appeal‘s decision did not distinguish between evidence obtained
    from the impermissible warrantless search and any evidence that might have been
    obtained from the permissible warrantless seizure, we affirm in part and reverse in
    part the judgment of the Court of Appeal and remand the matter to that court with
    32
    directions to issue a peremptory writ of mandate. The peremptory writ shall direct
    the superior court to vacate its order denying petitioner‘s motion to suppress
    evidence and conduct further proceedings consistent with this opinion.
    LIU, J.
    WE CONCUR: CANTIL-SAKAUYE, C. J.
    KENNARD, J.
    BAXTER, J.
    WERDEGAR, J.
    CHIN, J.
    CORRIGAN, J.
    33
    CONCURRING OPINION BY LIU, J.
    As today‘s opinion explains, there is an important difference between two
    kinds of smell-related claims. One is that the detection of a distinctive odor
    through a police officer‘s sense of smell may establish probable cause that a
    closed container holds contraband. This proposition is well established. (See
    Johnson v. United States (1948) 
    333 U.S. 10
    , 13 [smell of contraband may support
    probable cause where the officer is ―qualified to know the odor, and [the odor] is
    one sufficiently distinctive to identify a forbidden substance‖].) The other, quite
    different claim is that the plain smell of contraband is sufficient by itself, apart
    from any other exception to the warrant requirement, to justify opening a closed
    container without a search warrant. This proposition, which is not well
    established, is said by some courts and the District Attorney here to rest on an
    analogy to the plain view doctrine in Fourth Amendment law. I write separately to
    explain why this analogy is inapt and to elucidate concerns that should give courts
    pause before authorizing warrantless searches of closed containers based solely on
    the smell of contraband.
    I.
    The difference between a seizure and a search underlies the disanalogy
    between the plain view doctrine and the purported plain smell justification for
    opening a closed container without a warrant. The plain view doctrine holds that
    an officer may seize an object in plain view without a warrant so long as the
    officer is lawfully present in the place from which the object is viewed, the
    1
    incriminating nature of the object is immediately apparent, and the officer has a
    lawful right of access to seize the object. (See Horton v. California (1990) 
    496 U.S. 128
    , 136–137 (Horton).) As the high court has explained, the officer‘s
    conduct in such circumstances does not invade any Fourth Amendment privacy
    interest; it invades only the owner‘s possessory interest in the object. (Horton, at
    pp. 133–134.) This distinction elucidates why the plain view doctrine is a doctrine
    about seizures, not searches: ―The ‗plain-view‘ doctrine is often considered an
    exception to the general rule that warrantless searches are presumptively
    unreasonable, but this characterization overlooks the important difference between
    searches and seizures. If an article is already in plain view, neither its observation
    nor its seizure would involve any invasion of privacy. [Citations.] A seizure of
    the article, however, would obviously invade the owner‘s possessory interest.
    [Citations.] If ‗plain view‘ justifies an exception from an otherwise applicable
    warrant requirement, therefore, it must be an exception that is addressed to the
    concerns that are implicated by seizures rather than by searches.‖ (Id. at pp. 133–
    134, fns. omitted.)
    This difference between seizures and searches was recognized in one of our
    early Fourth Amendment cases addressing the issue of smell. In People v.
    Marshall (1968) 
    69 Cal.2d 51
     (Marshall), the court rejected the argument that
    police could dispense with the warrant requirement when opening a closed
    container based on the smell of marijuana. The officers in Marshall entered an
    apartment to arrest a suspect for the sale of marijuana to an informant. No one
    was inside the apartment when they arrived, but an officer ―detected a sweet odor‖
    coming from a closed paper bag located in an open cardboard box inside an open
    bedroom closet. (Id. at p. 55.) The odor was similar to the smell of the marijuana
    previously sold to the informant. The officers opened the bag and found 21 plastic
    bags of marijuana.
    2
    In an opinion by Chief Justice Traynor, the court stated the general rule that
    ―police officers may seize contraband evidence ‗in plain sight‘ ‖ and observed that
    ―[u]nder such circumstances there is, in fact, no search for evidence.‖ (Marshall,
    supra, 69 Cal.2d at p. 56.) But the marijuana in Marshall was not in plain sight; it
    was concealed inside a brown paper bag. (Id. at pp. 56–57.) In response to the
    Attorney General‘s argument that ―the marijuana should . . . be deemed to have
    been in plain view of the officer‖ based on its odor, the court reasoned as follows:
    ―[The Attorney General‘s] contention overlooks the difference between probable
    cause to believe contraband will be found, which justifies the issuance of a search
    warrant, and observation of contraband in plain sight, which justifies seizure
    without a warrant. However strongly convinced officers may be that a search will
    reveal contraband, their belief, whether based on the sense of smell or other
    sources, does not justify a search without a warrant.‖ (Id. at p. 57.)
    The court further explained: ―In the present case the brown paper bag itself
    was not contraband. Only by prying into its hidden interior [citation] could the
    officer be sure that he was seizing contraband and nothing more. The fact that the
    container was only a brown paper bag instead of a packing box, purse, handbag,
    briefcase, hatbox, snuffbox, trunk, desk, or chest of drawers [citation] is
    immaterial. It is inherently impossible for the contents of a closed opaque
    container to be in plain view regardless of the size of the container or the material
    it is made of. A search of the container is necessary to disclose its contents. A
    search demands a search warrant.
    ―Of course officers may rely on their sense of smell to confirm their
    observation of already visible contraband. [Citations.] To hold, however, that an
    odor, either alone or with other evidence of invisible contents[,] can be deemed the
    same as or corollary to plain view, would open the door to snooping and
    3
    rummaging through personal effects. Even a most acute sense of smell might
    mislead officers into fruitless invasions of privacy where no contraband is found.
    ―Moreover, however keen their sense of smell, officers cannot seize the
    thing they smell until they find it after looking for and through the places from
    which the odor emanates. In short, they must still conduct a search. . . . ‗In plain
    smell,‘ therefore, is plainly not the equivalent of ‗in plain view.‘ ‖ (Marshall,
    supra, 69 Cal.2d at pp. 58–59.)
    Although Marshall‘s authority as precedent was arguably undermined by a
    four-justice concurring opinion in Guidi v. Superior Court (1973) 
    10 Cal.3d 1
    (Guidi) urging that Marshall be overruled (see Guidi, at p. 19 (conc. opn. by
    Mosk, J.)), Guidi involved facts different from those in Marshall. The police in
    Guidi, after learning from an informant that two individuals suspected of selling
    hashish from a shopping bag were inside an apartment, entered the apartment and
    arrested the two suspects in the living room. One of the officers, Holt, then moved
    from the living room to the kitchen to investigate sounds coming from the rear of
    the apartment. In the kitchen, Officer Holt saw a shopping bag in plain view that
    smelled of hashish, and ―[s]eizing the bag he found the 10 ‗baggies‘ of hashish
    within.‖ (Id. at p. 5 (lead opn.).) On these facts, the court unanimously concluded
    that ―the exigencies of the situation‖ — the possibility that other suspects
    remained in the apartment to protect the contraband — justified the warrantless
    search. (Id. at p. 19; see 
    ibid.
     [―Having seen the described container of contraband
    in plain sight, Officer Holt was justified in ascertaining if it still contained the
    hashish, so as to evaluate the continuing danger of its violent defense.‖].)
    To the extent Marshall suggested that the smell of contraband coupled with
    exigent circumstances would not justify a warrantless search, Guidi said ―it is no
    longer to be followed.‖ (Guidi, supra, 10 Cal.3d at p. 17, fn. 18; see People v.
    Cook (1975) 
    13 Cal.3d 663
    , 668, fn. 4 (Cook) [―the result in Guidi was a pro tanto
    4
    overruling of Marshall as to the particular issue‖ (italics added)], disapproved on
    other grounds by People v. Doolin (2009) 
    45 Cal.4th 390
    , 421, fn. 22.) But
    Marshall itself, unlike Guidi, did not involve exigent circumstances, and none of
    our cases since Guidi has called into question Marshall‘s holding that ―[h]owever
    strongly convinced officers may be that a search will reveal contraband, their
    belief, whether based on the sense of smell or other sources, does not justify a
    search without a warrant‖ absent an established exception to the warrant
    requirement. (Marshall, supra, 69 Cal.2d at p. 57.) Further, Chief Justice
    Traynor‘s lucid reasoning in Marshall, which carefully distinguished between a
    plain-view seizure and a plain-smell search, correctly anticipated the high court‘s
    understanding that the plain-view seizure of a container ―does not compromise the
    interest in preserving the privacy of its contents because it may only be opened
    pursuant to either a search warrant [citations], or one of the well-delineated
    exceptions to the warrant requirement. [Citations.]‖ (Horton, supra, 496 U.S. at
    p. 141, fn. 11.)
    Like the observation of an object in plain view, the detection of the plain
    smell of marijuana does not involve any intrusion on privacy. No search has
    occurred within the meaning of the Fourth Amendment when an officer simply
    uses his nose to smell the odor of marijuana emanating from a closed container.
    However, unlike the mere act of sensory detection through sight or smell, the act
    of opening a closed container to expose its contents — whether it turns out to be
    contraband or something else — typically involves an intrusion on privacy and
    constitutes a search. The sense of smell, no less than any of the other senses, may
    give rise to probable cause to search. But probable cause ordinarily supports the
    issuance of a search warrant; it does not obviate the need for one.
    There is nothing anomalous in the fact that the smell of contraband may be
    sufficient to justify opening a package with a warrant yet insufficient to justify
    5
    opening it without a warrant. That is equally true of an informant‘s tip, a police
    officer‘s observation, or any other evidence supplying probable cause to conduct a
    search that is subject to the warrant requirement. The degree of suspicion
    supporting a search may be the same whether it is asserted beforehand in a warrant
    application or after the fact at a suppression hearing. But there is an important
    difference between requiring law enforcement officials to articulate their suspicion
    before searching for contraband and permitting officials to articulate their ex ante
    suspicion after contraband has already been found. That difference is a key reason
    why the law imposes the warrant requirement as a safeguard against excessive zeal
    or misconduct by law enforcement.
    Further, it is no answer to say that the distinctive odor of marijuana may
    enable a trained officer to tell with virtual certainty what is inside a closed
    container, for the same degree of certainty might arise through a tip from an
    unfailingly reliable informant. In neither case does the accuracy of the officer‘s
    suspicion bring the contents of a closed container into plain view such that seizure
    of those contents involves no search. As the high court has repeatedly said, even
    where ― ‗[i]ncontrovertible testimony of the senses . . . may establish the fullest
    possible measure of probable cause,‘ ‖ the settled rule is that ― ‗no amount of
    probable cause can justify a warrantless search or seizure absent ―exigent
    circumstances‖ ‘ ‖ or some other established exception to the warrant requirement.
    (Horton, supra, 496 U.S. at p. 137, fn. 7, quoting Coolidge v. New Hampshire
    (1971) 
    403 U.S. 443
    , 468.)
    II.
    Against this legal backdrop, the District Attorney contends that neither the
    act of smelling the package nor the act of opening it constitutes a search within the
    meaning of the Fourth Amendment because there is no reasonable expectation of
    privacy in a sealed package that reeks of marijuana. The argument is that no
    6
    search warrant is required because no search occurs when police open a package
    whose contents have already announced themselves through their distinctive odor.
    The United States Supreme Court has not resolved whether odor alone
    might negate a reasonable expectation of privacy in a sealed package, although the
    court flagged this issue in United States v. Johns (1985) 
    469 U.S. 478
    , 481
    (Johns). There, customs officers investigating a drug smuggling operation smelled
    marijuana coming from two pickup trucks in which they also saw distinctive green
    packages consistent with a common means of wrapping marijuana. The officers
    seized the trucks and removed the packages, opening them three days later without
    a warrant. The high court upheld the warrantless search because the odor and
    sight of the packages gave the officers probable cause to search the trucks under
    the automobile exception to the warrant requirement. (Id. at p. 487.) The court
    acknowledged but did not address the argument that the odor of marijuana might
    negate an expectation of privacy in a closed container: ―Whether respondents ever
    had a privacy interest in the packages reeking of marihuana is debatable. We have
    previously observed that certain containers may not support a reasonable
    expectation of privacy because their contents can be inferred from their outward
    appearance, [citing Arkansas v. Sanders (1979) 
    442 U.S. 753
    , 764–765, n. 13], and
    based on this rationale the Fourth Circuit has held that ‗plain odor‘ may justify a
    warrantless search of a container. [(United States v. Haley (4th Cir. 1982) 
    669 F.2d 201
    , 203–204 & fn. 3, cert. denied (1982) 
    457 U.S. 1117
    .)] The Ninth
    Circuit, however, rejected this approach [below], [(United States v. Johns (9th Cir.
    1983) 
    707 F.2d 1093
    , 1096)], and the Government has not pursued this issue on
    appeal. We need not determine whether respondents possessed a legitimate
    expectation of privacy in the packages.‖ (Johns, supra, 469 U.S. at p. 486.)
    In citing footnote 13 of Sanders, the high court in Johns was referring to
    the following dictum suggesting that there is no legitimate expectation of privacy
    7
    in a package whose contents can be inferred from its outward appearance: ―Not
    all containers and packages found by police during the course of a search will
    deserve the full protection of the Fourth Amendment. Thus, some containers (for
    example a kit of burglar tools or a gun case) by their very nature cannot support
    any reasonable expectation of privacy because their contents can be inferred from
    their outward appearance. Similarly, in some cases the contents of a package will
    be open to ‗plain view,‘ thereby obviating the need for a warrant.‖ (Arkansas v.
    Sanders, 
    supra,
     442 U.S. at p. 765, fn. 13 (Sanders).) The high court in Sanders
    offered this dictum in order to draw a contrast between the example of a gun case
    or burglary kit and the container at issue in that case: a green suitcase with no
    outward indication of its contents. (See id. at pp. 755, 763–764.)
    A four-justice plurality in Robbins v. California (1981) 
    453 U.S. 420
    (Robbins), reversed on other grounds by United States v. Ross (1982) 
    456 U.S. 798
    , elaborated on the Fourth Amendment exceptions suggested in footnote 13 of
    Sanders: ―The second of these exceptions,‖ i.e., where a package‘s contents are
    open to plain view, ―obviously refers to items in a container that is not closed.
    The first exception is likewise little more than another variation of the ‗plain view‘
    exception, since, if the distinctive configuration of a container proclaims its
    contents, the contents cannot fairly be said to have been removed from a searching
    officer‘s view.‖ (Robbins, at p. 427 (plur. opn. by Stewart, J.).) The Robbins
    plurality further elaborated: ―Expectations of privacy are established by general
    social norms, and to fall within the second exception of the footnote in question a
    container must so clearly announce its contents, whether by its distinctive
    configuration, its transparency, or otherwise, that its contents are obvious to an
    observer.‖ (Id. at p. 428.) The Robbins plurality concluded that the exception did
    not apply on the facts there: ―If indeed a green plastic wrapping reliably indicates
    8
    that a package could only contain marihuana, that fact was not shown by the
    evidence of record in this case.‖ (Ibid.)
    Although footnote 13 of Sanders was dicta, various courts have relied on it
    to uphold warrantless searches of closed containers with distinctive configurations.
    For example, in United States v. Banks (8th Cir. 2008) 
    514 F.3d 769
     (Banks), the
    court upheld the warrantless search of a gun case that was ―readily identifiable‖ as
    such because it was ― ‗a molded plastic case, a configuration handgun
    manufacturers commonly use when initially packaging a firearm for the end
    consumer,‘ ‖ and ― ‗had the manufacturer‘s name [―PHOENIX ARMS‖], clearly
    indicating an arms product, imprinted on the entire length of the front of the
    case.‘ [Citation.]‖ (Id. at p. 775; see also United States v. Taylor (D.C. Cir. 2007)
    
    497 F.3d 673
    , 680 [upholding warrantless search of gun case]; United States v.
    Meada (1st Cir. 2005) 
    408 F.3d 14
    , 23 [distinctively configured gun case rendered
    its contents ―unambiguous‖].) Other courts, however, have required a search
    warrant where a gun case, though recognized by trained officers, was not readily
    identifiable as such to lay observers. (See United States v. Gust (9th Cir. 2005)
    
    405 F.3d 797
    , 803 (Gust) [―courts should assess the nature of a container primarily
    ‗with reference to ―general social norms‖ ‘ rather than ‗solely . . . by the
    experience and expertise of law enforcement officers‘ ‖]; United States v. Bonitz
    (10th Cir. 1987) 
    826 F.2d 954
    , 956 [same].)
    Beyond gun cases and other single-purpose containers, federal courts of
    appeals have divided on whether other indicia, apart from outward appearance,
    may negate a reasonable expectation of privacy in the contents of a closed
    container. For example, courts have disagreed on whether the label on a container
    may justify a warrantless search. (Compare United States v. Morgan (6th Cir.
    1984) 
    744 F.2d 1215
    , 1222 [―the labels on the bottles of pills made it ‗immediately
    apparent‘ to the agents that the items were evidence of a crime‖] and United States
    9
    v. Eschweiler (7th Cir. 1984) 
    745 F.2d 435
    , 439 [envelope ―said safe-deposit box
    key, and had the name of the bank on it‖] with United States v. Villarreal (5th Cir.
    1992) 
    963 F.2d 770
    , 776 [―a label on a container is not an invitation to search it‖
    at least where the label does not indicate contraband].)
    In addition, some cases have held that ― ‗the circumstances under which an
    officer finds the container may add to the apparent nature of its contents‘ ‖ even
    when the container has no distinctive outward appearance. (United States v. Davis
    (4th Cir. 2012) 
    690 F.3d 226
    , 235; see id. at p. 236 [upholding warrantless search
    of a bag containing incriminating bloodstained clothes under a hospital bed where
    the officer knew ―it was the practice and procedure of the hospital to place a
    patient‘s clothing in a bag on the shelf under his bed‖].) But this approach has
    been criticized. (See Gust, 
    supra,
     405 F.3d at p. 802 [Sanders exception requires
    container to be evaluated ―without regard for the context in which it is found or
    the fact that the searching officer had special reasons to believe the container held
    contraband‖]; United States v. Donnes (10th Cir. 1991) 
    947 F.2d 1430
    , 1438
    [invalidating search of a camera lens case even though ―the officer‘s experience
    and training could have led him to infer that the camera lens case contained
    narcotics in light of the fact that it was found inside the glove with a syringe‖];
    United States v. Sylvester (5th Cir. 1988) 
    848 F.2d 520
    , 525 [invalidating search of
    a hunting box found at the scene of a suspected hunting offense because its
    ―contents cannot be inferred from simply looking at the box‖].) The latter cases
    limited the Sanders exception to containers whose contents may be inferred
    strictly from a container‘s outward appearance out of concern that ―the exception
    could swallow the warrant requirement.‖ (Gust, at p. 802; see Banks, 
    supra,
     514
    F.3d at p. 774 [Sanders ―exception is limited to those rare containers that are
    designed for a single purpose‖].)
    10
    There is similar conflict among the few courts that have addressed whether
    the smell of contraband can alone negate a reasonable expectation of privacy in a
    closed container. In United States v. Haley, 
    supra,
     
    669 F.2d 201
    , the Fourth
    Circuit said that in addition to a container‘s outward appearance or distinctive
    configuration, ―[a]nother characteristic which brings the contents into plain view
    is the odor given off by those contents.‖ (Id. at p. 203.) The court upheld the
    search of opaque plastic garbage bags on the ground that their ―distinctive
    configuration together with the intense marijuana odor brought‖ their contents into
    plain view. (Id. at p. 204.) But the court went on to say: ―We do not imply that
    both distinctive configuration and odor are necessary to justify the search of the
    containers. This Court has previously held that odor alone is sufficient cause to
    search such containers as cardboard boxes.‖ (Id. at p. 204, fn. 3, citing United
    States v. Sifuentes (4th Cir. 1974) 
    504 F.2d 845
    , 848 [interpreting ―plain view‖ to
    mean ―obvious to the senses‖ through odor as well as sight].) The Eleventh
    Circuit has also endorsed this view. (See United States v. Epps (11th Cir. 2010)
    
    613 F.3d 1093
    , 1098 [―[W]e have upheld a warrantless search of closed, opaque
    packages that reeked of marijuana.‖].)
    By contrast, the Ninth Circuit in United States v. Johns rejected the
    argument that because the smell of marijuana ―brought that contraband into plain
    view,‖ customs officers had authority to search closed packages without a warrant.
    (United States v. Johns, supra, 707 F.2d at p. 1096, revd. on other grounds by
    Johns, supra, 469 U.S. at p. 487.) While acknowledging that the smell of
    marijuana provided probable cause for a plain-view seizure of the packages, the
    Ninth Circuit said ―[i]t is a different question . . . whether an opaque container that
    is properly seized may be searched.‖ (United States v. Johns, 707 F.2d at
    p. 1095.) ―Our precedent . . . directs that while the odor of marijuana smelled by
    the agents would contribute to probable cause to believe that the container held
    11
    contraband, a recognized exception to the warrant requirement was necessary to
    justify a warrantless search. [Citation.] The odor and circumstances of the seizure
    supplied the probable cause for a search warrant. They did not eliminate the need
    for one.‖ (Id. at p. 1096, fn. omitted.) The court declined to apply the Sanders
    exception because ―[t]he wrapped bales here did not announce their contents with
    sufficient clarity to eliminate the need for a warrant.‖ (Id. at p. 1096, fn. 2.) The
    Second Circuit has similarly rejected the contention that a distinctive odor can, by
    itself, bring the contents of a closed container into plain view. (United States v.
    Dien (2d Cir. 1979) 
    609 F.2d 1038
    , 1045.)
    In considering this split of authority, it is important to note that although
    courts have applied the Sanders dictum with varying results, the United States
    Supreme Court has never itself applied the Sanders dictum to uphold a warrantless
    search of a closed container on the theory that its outward appearance or any other
    characteristic announced its contents. In California, only two published cases
    have applied the Sanders dictum to uphold a warrantless search; neither addressed
    the question before us. (See People v. Green (1981) 
    115 Cal.App.3d 259
    [upholding search of a gun case]; People v. Johnson (1981) 
    123 Cal.App.3d Supp. 26
     [upholding search of a suitcase where defendant told officers it contained
    marijuana].) In People v. Chavers (1983) 
    33 Cal.3d 462
     (Chavers), this court,
    without citing Sanders, allowed an officer to open a plastic shaving kit after he
    had lawfully ―lifted [it]‖ and ―felt the outline of a gun.‖ (Chavers, at p. 466.) But
    Chavers, like Guidi, upheld the warrantless search in the context of exigent
    circumstances. (Chavers, at p. 473 [the gun was ―an extremely dangerous
    instrument posing significant and immediate risks both to the police and to
    members of the public in the immediately surrounding area‖].)
    Chavers relied on Guidi and on People v. Lilienthal (1978) 
    22 Cal.3d 891
    ,
    which upheld the warrantless seizure of a distinctively folded square piece of
    12
    paper that fell from a suspect‘s wallet during a traffic stop. Noting the officer‘s
    ―experience in making numerous arrests where cocaine or heroin was transported
    in paper bindles similar to the one dropped by defendant‖ (id. at p. 898), the court
    in Lilienthal concluded that the officer was ―justified in making the plain view
    seizure of the paper‖ (id. at p. 899). But Lilienthal did not address whether it was
    lawful for the officer to open the paper after seizing it. Chavers also relied on
    People v. Guy (1980) 
    107 Cal.App.3d 593
    , where the officer ―[u]pon lifting the
    baggie . . . was able to conclude it contained a controlled substance.‖ (Id. at
    p. 599.) But there, the plastic baggie was transparent, and ―[t]he contraband was
    in plain sight.‖ (Id. at p. 600.)
    The unsettled scope of the Sanders dictum and the great variety of factual
    scenarios potentially implicating it should give courts substantial pause before
    extending it to hold that a distinctive odor may negate any reasonable expectation
    of privacy in the contents of a closed container. (See Flippo v. West Virginia
    (1999) 
    528 U.S. 11
    , 13 [exceptions to the warrant requirement must be ―narrow
    and well-delineated‖]; People v. Escudero (1979) 
    23 Cal.3d 800
    , 811 [―the courts
    must ever be on their guard to keep [exceptions to the warrant requirement] within
    firm and narrow bounds‖].) It may seem commonsensical to say that petitioner
    here could not have had a reasonable expectation of privacy in a sealed package
    that reeked of marijuana and turned out to contain marijuana. But it is a cardinal
    Fourth Amendment principle that ―the ‗reasonable person‘ test presupposes an
    innocent person.‖ (Florida v. Bostick (1991) 
    501 U.S. 429
    , 438.) And it is not
    difficult to contemplate situations where the smell of marijuana emanating from a
    closed container does not clearly or accurately announce its contents.
    For one thing, the record here does not indicate whether the package
    smelled of burned or unburned marijuana. Yet courts, including ours, have
    recognized ―a commonsense distinction between the smells of burnt and raw
    13
    marijuana.‖ (United States v. Downs (10th Cir. 1998) 
    151 F.3d 1301
    , 1303; see
    Wimberly v. Superior Court (1976) 
    16 Cal.3d 557
    , 571–572 (Wimberly); State v.
    Larson (Mont. 2010) 
    243 P.3d 1130
    , 1142; Bailey v. State (Md. 2010) 
    987 A.2d 72
    , 91; Com. v. Waddell (Pa.Super.Ct. 2012) 
    61 A.3d 198
    , 217–218; Meek v. State
    (Ind.Ct.App. 2011) 
    950 N.E.2d 816
    , 818; Taylor v. State (Fla.Dist.Ct.App. 2009)
    
    13 So.3d 77
    , 79.) Because ―the smell of burnt marijuana is generally consistent
    with personal use of marijuana‖ (Downs, at p. 1303), the smell does not
    necessarily indicate the presence of marijuana when it emanates from a closed
    container. As is familiar to anyone who has sat at a bar, in a lounge, or on an
    airplane before the widespread advent of smoking prohibitions, the permeation of
    smoke into clothes, purses, briefcases, backpacks, or other articles can leave a
    strong and lasting odor. Similarly, an object or person present in a room, car, or
    other space where marijuana is burned may acquire a distinctive smell, even
    though the object or person does not hold marijuana.
    Prior to the high court‘s decisions expanding the scope of automobile
    searches (see maj. opn., ante, at pp. 10–16), we held that ―the odor of burnt
    marijuana‖ supported the reasonableness of searching a car‘s interior for evidence
    of ―casual‖ or ―personal‖ use of marijuana, but did not by itself provide reasonable
    grounds to search the vehicle‘s trunk for raw marijuana to be transported or sold.
    (Wimberly, supra, 16 Cal.3d at pp. 572–573.) In Wimberly, we ―differentiate[d]
    between the casual user and the dealer of narcotics‖ and explained that the smell
    of burned marijuana provided reason to suspect the former but not the latter. (Id.
    at p. 572; accord, United States v. Nielsen (10th Cir. 1993) 
    9 F.3d 1487
    , 1491
    [smell of burnt marijuana in car‘s passenger compartment did not provide
    probable cause to believe the car‘s trunk contained marijuana].) As these cases
    suggest, the smell of burned marijuana emanating from a sealed package may
    indicate that the package or its contents have been in a place where marijuana was
    14
    consumed. But it does not necessarily indicate that the package contains
    marijuana. At the very least, it is questionable whether the smell ―so clearly
    announce[s] its contents‖ as to render those contents ―obvious to an observer‖ and
    thereby negate any reasonable expectation of privacy. (Robbins, 
    supra,
     453 U.S.
    at p. 428 (plur. opn.).)
    Moreover, even assuming that an ordinary observer can distinguish
    between raw and burned marijuana, the fact that a sealed package smells of raw
    marijuana does not necessarily reveal that the package contains marijuana. Like
    the smell of burned marijuana, the smell of unburned marijuana may be due to a
    transferred or residual odor. In People v. Gale (1973) 
    9 Cal.3d 788
     (Gale), the
    ―defendant‘s clothing . . . smelled strongly of marijuana‖ (id. at p. 792), and ―both
    officers testified they detected a strong odor of fresh marijuana apparently
    emanating from defendant‘s person.‖ (Id. at p. 793, fn. 4.) But ―[a] search of
    defendant‘s person disclosed . . . no marijuana or other contraband.‖ (Id. at
    p. 792; see United States v. Quintana (M.D.Fla. 2009) 
    594 F.Supp.2d 1291
    , 1295
    [duffel bag ―smelled strongly of raw marijuana‖ but police ―found no marijuana
    inside the bag‖]; State v. Davis (La.Ct.App. 1991) 
    580 So.2d 1046
    , 1048 [police
    ―detected a strong odor of raw marijuana during the vehicle search‖ but ―found no
    marijuana‖].) As these examples show, it is not difficult to conjure scenarios in
    which the smell of marijuana emanating from an otherwise nondescript package
    does not reveal its contents with a level of clarity akin to plain view.
    It may be possible for a marijuana odor emanating from a closed container
    to be so distinctive and intense that no one could have a reasonable expectation of
    privacy in the container‘s contents. As today‘s opinion notes, the record in this
    case does not permit us to resolve that issue one way or the other. (See maj. opn.,
    ante, at p. 31.) The discussion above suggests there are substantial hurdles that
    15
    such a plain smell doctrine would have to overcome to justify departing from the
    clear, administrable rule that opening a closed container requires a search warrant.
    My observations cast no doubt on the settled proposition that the smell of
    marijuana can establish probable cause to search and, in the context of an
    automobile search or exigent circumstances, can provide a sufficient basis to
    proceed without a warrant. (See, e.g., Cook, supra, 13 Cal.3d at pp. 668–670;
    Gale, supra, 9 Cal.3d at p. 794; Mann v. Superior Court (1970) 
    3 Cal.3d 1
    , 7.)
    But it is an altogether different proposition to contend that the smell of marijuana
    can be sufficient by itself to negate any reasonable expectation of privacy in a
    closed container. Although the high court has suggested that there might be no
    legitimate expectation of privacy in a container whose ―outward appearance‖
    (Sanders, supra, 442 U.S. at p. 765, fn. 13) or ―distinctive configuration‖
    (Robbins, 
    supra,
     453 U.S. at p. 428 (plur. opn.)) clearly announces its contents,
    neither the high court nor this court has upheld a warrantless search solely on the
    basis of Sanders‘s posited expansion of the plain view doctrine. Lower courts
    have not agreed on the scope or proper application of the Sanders dictum, and the
    breadth of circumstances potentially implicating it is cause for caution. Moreover,
    it is questionable whether the smell of marijuana alone can reveal the contents of a
    closed container so clearly as to eliminate any legitimate privacy interest.
    In sum, there is ample reason for courts, including ours, to hesitate before
    accepting a novel legal theory that would allow the search of a closed container to
    proceed without a warrant based solely on the smell of contraband.
    LIU, J.
    I CONCUR: WERDEGAR, J.
    16
    See next page for addresses and telephone numbers for counsel who argued in Supreme Court.
    Name of Opinion Robey v. Superior Court
    __________________________________________________________________________________
    Unpublished Opinion
    Original Appeal
    Original Proceeding
    Review Granted XXX 
    200 Cal.App.4th 1
    Rehearing Granted
    __________________________________________________________________________________
    Opinion No. S197735
    Date Filed: June 27, 2013
    __________________________________________________________________________________
    Court: Superior
    County: Santa Barbara
    Judge: Edward H. Bullard
    __________________________________________________________________________________
    Counsel:
    Raimundo Montes De Oca, Public Defender, and Patricia Dark, Deputy Public Defender, for Petitioner.
    Stephen P. Lipson, Public Defender (Ventura) and Michael C. McMahon, Chief Deputy Public Defender,
    for California Public Defenders Association and Public Defenders of Ventura County as Amici Curiae on
    behalf of Petitioner.
    No appearance of Respondent.
    Joyce E. Dudley, District Attorney, and Michael J. Carrozzo, Deputy District Attorney, for Real Party in
    Interest.
    Kamala D. Harris, Attorney General, Dane R. Gillette, Chief Assistant Attorney General, Pamela C.
    Hamanaka, Assistant Attorney General, James William Bilderback II and Thomas C. Hsieh, Deputy
    Attorneys General, as Amici Curiae on behalf of Real Party in Interest.
    Counsel who argued in Supreme Court (not intended for publication with opinion):
    Patricia Dark
    Deputy Public Defender
    County Courthouse, 3rd Floor
    Santa Barbara, CA 93101
    (805) 568-3494
    Michael J. Carrozzo
    Deputy District Attorney
    1112 Santa Barbara Street
    Santa Barbara, CA 93101
    (805) 568-2399