Can You Fail a Drug Test From Second Hand Smoke? US Drug Test Centers US Drug Test Centers Health Risks of E Cigarettes and Vaping American Lung Association 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 Nicotine e cigarettes reduce harmful chemical exposure and help smokers quit, study finds