I hung out with my uncle for a few days and he smoked it in the living room 3 or 4 times a day. He's got a drug test today and its been a little less than a week, so if I let him use my urine, would he still get busted?
It's possible, but I think highly unlikely. I think 2nd hand smoke only causes a problem if you are in close quarters within a day or so of the test.
yeah man you definitely wont test positive for weed because it was tiny tiny bits in your system, and you dont need to worry that was a week ago, definitely give him your urine to save his ass