Vaping Harmless. Vape aerosol contains toxic chemicals like formaldehyde, arsenic, lead, chromium, and nickel. They damage lungs. They harm developing brains. They raise cancer risks. We Disposable Vape Ban: What You Need to Know Firechief Global About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Vaping, Panic, and Prohibition: Why the UC Davis Study Needs Context Cato at Liberty Blog Electronic cigarette Wikipedia The devices, popular among teens, emit lead, nickel and antimony at concentrations that may exceed cancer and neurological risk thresholds.