My favorite, from a pack of cigarettes I bought in Brazil:
"Smoking causes sexual impotance." - with a picture of a man and woman in bed, the woman rolling over to sleep and the man looking at the camera shrugging his shoulders.
Those heavy smoking WWII vets that fathered the baby-boomers must get a good laugh out of the impotence nonsense.
God,what's next? Smoking causes hair loss? smoking causes fat thighs? Smoking causes ADHD?
Smoking has been blamed for so much that no one pays attention anymore.