Foot Cone and Belding , Singapore did this really neat execution on the streets for the Health Promotion Board of Singapore. Passers-by were given strips of tobacco stench in the form of a new perfume with a message behind that read
"This is how you smell when you smoke. 4000 toxic chemicals leave a stench no perfume can mask. Just ask the people around you. Please stop smoking. You'll smell better instantly. Call 1800 438 2000"
Now that is something that is going to make even the most keen smoker think twice! This is really nice work.