Hey I'm new to the site but not to the weed. I was wonderin if second-hand marijuana smoke will cause someone to test positive on a drug test. My dad quit smokin like 6 months ago and i still smoke. He's tryin to get a job and doesnt want to test positive so right now i cant smoke in my room. I dont think it will cause him to fail the drug test but i just want to make sure. Any help would be appreciated. Thanks