Would secondhand marijuana smoke show up on a drug test?
That other is complete bull. i know first hand that secondhand marijuana smoke can make you fail a drug test. i was in my friends room and they were blazing and i wasnt (cuz i knem i was going to be tested) and they smoked the whole day. In total they all probably smoked 20+ bowls. the room is a normal room and it is about 15 feet by 12 feet and we had the window open with a ceiling fan on and a ground air filter and fan on. I was in the room with them all day and i went home and got tested the next morning. i failed my drug test and had not smoked marijuana in over 9 months. This can happen but it doesnt stay in your system long at all.