Vape Device Vape Smoking Vapor Vaping Stock Illustration 683657083 Shutterstock What Does Vaping Do to Your Lungs? Johns Hopkins Medicine About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Many people assume vaping is harmless to bystanders, but secondhand aerosol can contain ultrafine particles and chemical residues. Researchers are examining how exposure may affect airways and overall health, especially for children