Can Police Search a Car for the Smell of Weed in California? Only if It Points to a Violation

California never wrote an odor rule. It wrote a sentence about lawful conduct in 2016, and the courts have worked out what that does to the smell in a car. It turns on one thing: whether the odor points to something still illegal.

Can Police Search a Car for the Smell of Weed in California? Only if It Points to a Violation

Not on odor alone. “[T]he odor of marijuana alone no longer provides an inference that a car contains contraband” (People v. Johnson, 50 Cal.App.5th 620 (2020), Court of Appeal). Odor can still help build probable cause when other facts make it fairly probable that a specific cannabis law is being broken.

California: odor and the car — Odor alone isn't probable cause. Odor that points to an actual violation can be. — California: odor and the car — the statute, the controlling cases, and what still gets you into the car. The full breakdown lives inside StreetSense, offline.

The statute — what § 11362.1(c) does and doesn't say

Adults 21 and over may possess and transport not more than 28.5 grams of cannabis and not more than 8 grams of concentrated cannabis, including concentrate contained in cannabis products (H&S § 11362.1(a)).
(c): cannabis involved in that lawful conduct is “not contraband nor subject to seizure, and no conduct deemed lawful by this section shall constitute the basis for detention, search, or arrest.”
What it doesn’t say: it never mentions odor, and it states no exclusion remedy of its own. It protects only conduct that is actually lawful — not under-21 possession, an over-limit amount, an open container in the car or smoking while driving. § 11362.45(a) leaves the impaired-driving laws untouched.

Johnson and Blakes — odor alone is out

Johnson (Third District, 2020): odor “no longer provides an inference that a car contains contraband because individuals over the age of 21 can now lawfully possess and transport up to 28.5 grams.”
Blakes v. Superior Court, 72 Cal.App.5th 904 (2021) (Third District): “The smell of burnt marijuana in a car, where there is no indication it had been recently smoked within, cannot by itself provide probable cause of driving under the influence of marijuana.”
What the Supreme Court did and didn’t decide. Sellers v. Superior Court, No. S287164 (Cal. Jan. 29, 2026), unanimous, involved no odor. It held that a rolling tray and 0.36 grams of crumbs, plus nervousness, was not probable cause, and rejected the idea that a lawful amount “suggests” more. It cited Johnson’s odor holding with approval but did not decide an odor rule.

Odor plus a violation — the cases that upheld searches

People v. Fews, 27 Cal.App.5th 553 (2018): the smell of “recently burned” marijuana and a half-burnt cigar containing marijuana supported a reasonable inference of driving under the influence, “or, at the very least,” an open container.
In re Randy C., 101 Cal.App.5th 933 (2024): an unburned blunt on the passenger’s lap was an open container, and with the smell of unburnt marijuana gave probable cause. The driver was 17.
People v. Castro, 86 Cal.App.5th 314 (2022): a strong odor of burnt marijuana, the driver’s admission to smoking, and every occupant under 21 — all three facts — gave probable cause.
Each search that held up named the violation the odor pointed to.

Open container after Sellers

“[A]t a minimum, to constitute a violation of section 11362.3, subdivision (a)(4), marijuana in a vehicle must be of a usable quantity, in imminently usable condition, and readily accessible to an occupant.”
It does not have to be sealed to be lawful. A baggie knotted at the top is not open (Johnson).

In the car — the infractions

Open container or package while driving or riding in the passenger compartment (H&S § 11362.3(a)(4)): infraction, fine up to $250 (§ 11362.4(b)).
Smoking or ingesting while driving on a highway, or as a passenger in a car being driven on one (Veh. Code § 23221): infraction.
Driver with an opened receptacle or loose flower on their person (Veh. Code § 23222(b)): infraction, up to $100; not if it’s in the trunk.
Over 28.5 grams or 8 grams of concentrate, age 18 or older: misdemeanor, up to 6 months and/or $500 (§ 11357(b)(2)).
DUI is Veh. Code § 23152(f); there is no THC per se level.

The federal floor — and why it doesn't decide your case

Under the Fourth Amendment the automobile exception needs probable cause and nothing more (Maryland v. Dyson, 527 U.S. 465 (1999)), and marijuana is still illegal under federal law.
California’s rule is § 11362.1(c) as California courts apply it inside the Fourth Amendment analysis. Federal officers are not bound by § 11362.1(c).
That is the floor. A state court applying its own statute or constitution can — and here does — suppress what a federal court would admit. Work to your state’s rule.

How it plays out on the street

Late stop for a broken taillight. The car smells of burnt marijuana; the driver is an adult, steady, nothing in view. That’s Blakes — no sign of recent smoking, no impairment, no search. Now add fresh smoke in the cabin and a half-burnt blunt in the driver’s hand. You’re closer to Fews: the odor points to an open container or a DUI. Write down which violation you expected to find, and why.

Frequently asked questions

Can police search your car for the smell of weed in California?

Not on the smell alone. In People v. Johnson (2020) the Court of Appeal held that the odor of marijuana alone no longer provides an inference that a car contains contraband. Odor can contribute to probable cause when other facts point to a specific violation, such as recent smoking in the car, an open container, an over-limit amount or under-21 occupants.

Did the California Supreme Court decide the marijuana odor question?

No. Sellers v. Superior Court (Jan. 29, 2026) involved no odor. It held that lawful marijuana-related conduct, a rolling tray and crumbs, plus nervousness was not probable cause, and it set the test for an open container. It cited the Johnson odor holding with approval.

Is it illegal to have open weed in your car in California?

Yes. Possessing an open container or open package of cannabis while driving or riding in the passenger compartment is an infraction with a fine of up to $250 (H&S §§ 11362.3(a)(4), 11362.4(b)).

Carry the rule, not the guesswork. StreetSense breaks down California law like this — the statute, the limit, and the charge that actually sticks — verified against the code and available fully offline on shift. Start the free trial.

StreetSense is an educational reference for law enforcement, not legal advice. State law changes, and your department policy may be stricter than the statute. Always follow your state’s current rule and your agency’s policy.

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