Breathing in someone else's smoke or vape isn't harmless. Secondhand smoke exposure can affect your lungs, brain, and overall health. Protect your families and yourself. Inhalar el humo o el vapor de Tobacco Smoke, Vaping, and Asthma AAFA.org Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center News Is Second Hand Vape Smoke Harmful? Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA