"Vapingit's just water vapor, no big deal!" FALSE! Most vaping devices contain & release a number of potentially toxic substances including metals & volatile organic compounds, some of which have been linked A Warm, Buttery Flavor and a Risk of Irreversible Lung Damage DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs. Elf Bar Concern Over Diacetyl In Lost Mary E Cigarettes What Vape Flavors Contain Diacetyl