Can THC get in your system from second-hand smoke?

A very common myth about cannabis is that inhaling secondhand smoke will cause you to feel a “contact high.” Sometimes at a concert you might hear people saying that if people around you are smoking marijuana you might get high too. read more

Being around enough second hand marijuana smoke to ‘get high’ is a different question than how much marijuana smoke someone would need to be around to fail a drug test. Being ‘high’ is subjective, while the amount of THC in ones system is quantifiable with a chemical test. read more

By contrast, screening assays for carboxy THC at the 50ng/mL threshold — the standard cut-off for a preliminary workplace drug test — only yielded a single positive sample, which was recorded four hours following the subject’s second-hand smoke exposure. read more

But as weed has gotten more potent, scientists decided to investigate if secondhand smoke from strong strains of cannabis could lead to positive drug test results. Urine tests look for a metabolite, or bodily by-product of THC, the chemical that accounts for many of marijuana’s psychoactive properties. read more