Here's an experiment that was done to see how much tar came from 400 cigarettes. Link to clip Now, before any smokers or non-smokers start throwing opinions around, let me set the record straight. This thread was not created to start a debate on whether or not you should smoke or if you should smoke around kids. Those topics have already been beaten to death. The clip has an anti-smoking message, but I posted it simply because I thought it was interesting experiment.