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 Flavor induced inflammation and cytotoxicity in human aortic smooth muscle cells: Potential implications for E cigarette safety ScienceDirect HealthMatch Vaping may be safer than cigarettes, but it's not safe Vaping disrupts mitochondria and promotes inflammation independent of the effects of past smoking Stanton Glantz blog E cigarette vapor disables key immune cells in the lung and boosts inflammation E Cigarette acute effect on symptoms and airway inflammation: comparison of nicotine with a non nicotine cigarette