I smoke and since smoking is allowed in pool rooms I'd have zero sympathy for you. If you don't like the smoke you have the option of not going there. BUT, I will say this, if you were to petition the pool hall to go to a no smoking policy, even though I smoke, I would back you 110%.
MULLY
1 or 2 cancer sticks ever 15-20 minutes isn't a big deal. chain smoking is completely different. especially since they always seem to do it in the chairs closest to other people that might be bothered. if there's room to do it away from other people they should