This one falls under the category “The More You Know” cuz I sure had no clue on this. Apparently, if you are with someone who’s smoking weed in a poorly ventilated area, you are at risk of failing a drug test. There was a study done in some Canadian Medical Journal or something and the results were that if you are in a hotboxed room, you can not only get a second hand high, you can also get yourself a dirty test. Fantastic, but here’s the good news. Experts say that a dose of Vitamin B may help to mask the THC. Check the whole thing out here and stay lifted, Z-Rock Fam.