foul, stinking breath and body odor (I mean, even when it's cold and she's not sweating). arrogance, a holier-than-thou attitude
Bad body odour and hairy backs/shoulders, eeewwww. Oh and too much fragrance/aftershave. I prefer to be able to smell the person (clean person!!), not something out of a bottle.
i have a lot of turn ons, but not too many turnoffs. if i like someone, it's hard to turn me off to them, and if i don't it's for lack of turnons as opposed to presence of turnoffs
I agree with Musikero, arrogant and holier-than-thou attitudes are the worst. Independent women are admirable, but women that make an extra effort to make sure you know that are unbearable.
Like I'minmyunderwear said, If I like someone I don't really care about the turn offs I have either. But I think the main one I have is if they at all seem fake when I meet them. I really don't like fakie people for some reason.
stupidity, followed in a close second by the inability to ever make a fucking decision about anything