I wouldn't worry, smoking is a pretty mild fetish
Believe me Smoker,
From the stories chicas have told me regarding client fetishes, Smoking a cigar is mild. I am sure they won't mind and might even find it wierdly kinky, just as long as you don't pull a Bill Clinton on her, though who knows, she might like that too.
PS, ALOT of girls in BA smoke, pro and non-pro alike. I wouldn't worry if I was you. I am sure you will find many takers.
Good luck,
Bad
PPS, who cares if she finds it wierd, that is why we pay them, so we don't have to worry about judgement calls.