Vaping: Safe? Or Are Your Lungs Going Up In Smoke? Smoking and Vaping National Institute of Environmental Health Sciences Vaping is risky. Do not do it if you care about your lungs Thomas Eissenberg The Guardian 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.