I got a job offer and it's contingent on a drug test. Now, I dont do drugs of any kind. I've never tried weed, nothing. My neighbor however smokes a LOT. He smokes enough that while walking up to my door, you can smell the weed through his front door. (I live in an appt. complex) Will I test positive for MJ because I smelled it? Or do I actually have to take a hit to have it in my system?