Stop Smoking E Cigarettes CardioSmart American College of Cardiology 80.8% people believe that vapes are less harmful than cigarettes VAPE HK Heated Tobacco Products, Cigarettes, and E Cigarettes: What's the Difference PMI Science 2.3% of US population reports current e cigarette use Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer,