Vapor from e cigarettes may impair the cells that line the lungs Lung Damage From Vaping Resembles Chemical Burns, Report Says The New York Times Inhalation Toxicology of Vaping Products and Implications for Pulmonary Health The safest vape is the one you never start. Flavoured vapes were designed to feel harmless: Candy taste. Fruit smell. Cool packaging. Viral aesthetics. But your lungs don't care about the flavour.