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Could secondhand pot smoke make you fail a drug test?

Could secondhand pot smoke make you fail a drug test? (KSNV file)

Recreational marijuana is legal in Nevada. But that doesn’t mean everyone wants the air to smell like a pot rally.

One week since recreational sales began, there appears to be a lot of confusion around the effects of secondhand marijuana smoke.

News 3 asked Dr. Daliah Wachs to clear up some common misconceptions.

“Marijuana has a distinct smell,” said Dr. Wachs.

The smell of marijuana is strong, but can you fail a drug test because of secondhand pot smoke?

RELATED LINK | Fireworks, food, and fanfare | Recreational marijuana sales launch in Nevada

Dr. Wachs, a family care physician, says it is rare.

“Most of the time, secondhand marijuana will be gone after a day. But if they need to test you now, and you were exposed to some heavy secondhand marijuana smoke in an under-ventilated place, you could show up positive,” said Dr. Wachs.

She says contact highs are real.

“They've done studies showing in rats, rats will show presence of THC in their system if they've been exposed to marijuana smoke. So, secondhand smoke will get into your system,” said Dr. Wachs. “They found it took at least a few minutes for their blood vessels to go back to normal function."

Her best advice?

“You want to make sure you're in a very well ventilated space,” Dr. Wachs noted.

Remember, marijuana is prohibited in casinos, bars, restaurants, parks, and concerts. There’s a $600 fine for smoking in public.

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