I don't care either way if a guy smokes or not, and I don't think it makes girls unattractive. Wait, there's an exception to that. If a girl smokes and immediately gets annoying and all "omgomgomg like, I'm like soooo high!!!!" from one hit then fuck that bitch. That shit's irritating.
I don't think cigs are very attractive though. I don't see their appeal.
i like it if a girls down for a smoke, but as its been said before not if they're gonna have one toke and be like OMG IM SO HIGH OMG LOLLLLL and not shut up about it.
as for cigarettes, as long as they're not like a chainsmoker it's fine, although even then i dont mind too much if theyre cool/ hot. if they don't smoke then thats fine too, as long as they aren't one of those really judgemental types who would genuinely hold it against you if you were to light up in their company. thankfully i've managed to escape girls like that now im at uni (same applies to weed, its fine if they dont smoke as long as they're chill about it)