Seriously? Wow. Wherever you live, remind me not to go there, haha. There is nothing worse than your outside air being ruined by secondhand smoke, doubly so for pot. It definitely gives me a migraine.
Heck, two years ago I was on a ski lift, enjoying a marvelous day, when the punks in front of me decided to enjoy a joint while headed up. By the end of the five-minute lift run I was about to puke.
Just think about others, people (not you specifically)...it's not hard...