How vaping has an unhealthy impact on indoor air quality : r ireland Secondhand vape exposure: Risks and side effects 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. Does vaping cause lung cancer? UT MD Anderson How Long Does Vape Smoke Stay in the Air?