As a smoker myself, the answer is no. If it's something that bothers you so much that you're considering breaking up with her, it's perfectly within your right. We all have things we can or can't live with, if you feel so strongly, do it sooner rather than later.
I don't think so.
No I had to stop smoking for my boyfriend because he said he could never date a smoker. If she likes you then you will win over her smokes
Not if the smoke is coming out of her ears and she is growling at you.
Umm... I don't think so. Think of it this way: Is it wrong to ditch a girl because she damages your health?
If she does it because she thinks it's cool then na it ain't but I've smoked a few times but not because I thought it looked cool, there were other reasons! x
That could be a reason if you feel strongly enough about it.