The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect 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 E Cigarette acute effect on symptoms and airway inflammation: comparison of nicotine with a non nicotine cigarette BREAKING: New research suggests flavored e cigarettes may be linked to lasting lung injury. Scientists examined how certain flavoring chemicals affect airway cells. Some compounds were associated with inflammation and impaired repair. The Flavor induced inflammation and cytotoxicity in human aortic smooth muscle cells: Potential implications for E cigarette safety ScienceDirect E cigarette vapor disables key immune cells in the lung and boosts inflammation