Delaware law restricting vaping takes hold WHYY 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 About E Cigarettes (Vapes) Smoking and Tobacco Use CDC What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Vape Device Vape Smoking Vapor Vaping Stock Illustration 683657083 Shutterstock