I am really worried because this semester I applied for my clinicals at UWM. I need to take a hair test for it and I never smoke pot, however this last weekend I was at my friends house where a group of guys (5 or so) were smoking out of a bong. I am worried that this will show up in my hair. We were in his living room/kitchen area which is pretty big and I tried to leave the room when I could. I would say they smoked about 2-3 times over 3 hours. Does anybody know if I should be worried?

Nope don't be worried. If you didn't smoke it, it won't show up.