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 How Does Vaping Affect You? Short & Long Term Effects Explained E Cigarettes and Vaping OHSU How Smoking and Vaping Can Harm Your Smile: What You Need to Know Secondhand vape exposure: Risks and side effects Health Effects of Tobacco Use FDA