A hot girl that smokes is no longer a hot girl.
I dumped the hottest girl I ever dated the moment I saw her light up for the first time. I'll admit that my aversion to to smoking probably borders on obsessive, but I grew up with two parents who didn't give a ****** about what I breathed for 18 years, and I made the decision around 8 years old that I would never, ever tolerate living with that garbage once I moved out. I've told my wife that if I ever catch her smoking she'll be divorced so fast her head will spin.
Anywho, back to hot chick. She was very attractive, very smart, and soon to be very successful/rich. We had been dating for about two months and we were pretty into each other. We were at a bar one night with some friends when she asked someone else for a cig. 0.833 seconds later, I was single again.
Seeing a woman smoke just completely destroys my perception of her - physically, intellectually, you name it. I actually feel myself lose respect for them and I'm completely unattracted to them. I can suck on an ashtray without having to buy it dinner and deal with its PMS.