I quit smoking (was a light smoker to begin with) 15 years ago because of nasal allergies. Got tired of feeling bad all the time...second hand smoke is even worse.

This is an automatic disqualifier for me.

Amazed this isn't higher.

I could never be with somebody who smoked.(cough)

I wouldn't get involved with a chain smoker in the first place, but if I had been dating someone for a while and found out that he liked to sneak a smoke every so often, I'm obviously not going to dump him. However, I would definitely encourage him to quit.

As the description of the list states, we are rating scenarios that would make you want to dump a prospective romantic partner. This includes people who request a date from you and blind date experiences. Although this is often an unpleasant deal breaker for me, I'll confess to having been infatuated with a couple otherwise wholesome types who happened to smoke. Furthermore, I discovered a pack of cigarettes once in the car of someone I'd been dating for months who later admitted to practicing the habit infrequently and in secret. And no, I didn't suddenly dump my date. There are unhealthy behaviors far more distressing than tobacco use, in my humble opinion.

Smoking is a nasty, stupid, truly lowbrow habit that is simply useless. Having a date as a smoker is a health risk not only to his-or-herself, but to the other person on the date AND other members of the public around him or her. Forget it. If that lighter is on, the date is off.