SMOKERS. When I used to smoke it was hard not to carry that scent around. But all the girls I knew said the same thing... "I didn't know you smoke." Why? 5 tips
1) Hold the cigarette away from yourself. 
2) Never drag through your teeth. 
3) never keep a cigarette in the car with yourself. (Hold it out the window) 
4) Dip into the bathroom and put some soap on a damp towel and hit your nose and mouth for a quick second. Then wash off. 
5) Obviously mouth wash and mints are good. But juicy fruit gum actually goes quite well with cig smoke.