Here's a few of our favorites:
Smoking gives you ashtray breath.
FORMALDEHYDE: Used to preserve dead bodies, and found in cigarette smoke.
Most people get hooked before they even realize it.
BERYLLIUM: Found in nuclear weapons and cigarette smoke.
Smoking causes wrinkles and gray skin.
Cravings suck, but they'll pass, and you'll have time for better things.
HYDROGEN CYANIDE: Found in insecticide and cigarette smoke.