Cigarettes while pregnant

Ok obviously I'm not going to be smoking if I'm pregnant.. I'm just wondering for moms that DID smoke, did cigarettes change when you first got pregnant? Suddenly they're making me sick, lightheaded, and just the smell of it makes me want to throw up it's bad. We're not TTC anymore but I've been having symptoms that make me curious if I am. I'm gonna stop smoking for now until I can test this weekend, but I'm just curious if the smell of cigarettes changed for anyone else in early pregnancy?