Viewpoints: Is the jury still out on e cigarettes? NZ Drug Foundation 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 The New Truth About Vaping: Is E Cigarette Regulation Working? Vaping Related Illness and Lung Disease NEJM E cigarettes are NOT safe and vaping harms health, World Health Organization rules