Police officers have long used the alleged scent of marijuana as an excuse to perform searches of alleged offenders’ motor vehicles when they refuse to consent to such searches. After the two divisions of the Arizona Court of Appeals came to different conclusions about the legality of the “plain smell doctrine”—the proposition that the smell of cannabis alone provides probable cause, the Arizona Supreme Court agreed to review of one of the cases.
The alleged offenders in both cases argued that the odor of marijuana no longer suffices to establish probable cause after the implementation of the Arizona Medical Marijuana Act (AMMA) in 2010. “We granted review because whether AMMA affects the determination of probable cause based on the odor of marijuana is a recurring issue of statewide importance,” the Arizona Supreme Court wrote in its decision in State Of Arizona v. Ronald James Sisco II, No. CR-15-0265-PR.