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 While smoke and vapor may seem similar, smoke from burning delivers a harmful chemical punch due to its chemical reaction. Explore what's inside both and uncover the differences here: https: www.pmi.com our science the difference between cigarette Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA How do vapes work and what chemicals are inside them? BTN High Vaping vs Smoking Cigarettes vs Vaporizer Bucks County PA Thousands of chemicals in ecig liquid and aerosol Stanton Glantz blog