The Look of Vapes Has Changed. Here's Why the Shift Has Experts Worried. The New York Times Health Risks of E Cigarettes and Vaping American Lung Association Nicotine e cigarettes reduce harmful chemical exposure and help smokers quit, study finds Vaping refers to the act of inhaling and exhaling aerosol, often called vapor, produced by an electronic cigarette or similar device. These devices heat a liquid that usually contains nicotine, flavorings, and