Are you a smoker?

[KingFate]

I am not mainly because my father is a respiratory therapist and he told me the horror stories of smoking related diseases while I was a young child. I don't mind smokers I just will do my best to avoid the smoke if I am around them. I am not going to demand they stop that would be a bit of a dick move, it's their life.

If it really is such a bother you could just ask them to blow smoke in the opposite direction.