Secondhand smoke and secondhand aerosol While vaping is not risk free, it is less harmful than tobacco Our World in Data Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Breathing in someone else's smoke or vape isn't harmless. Secondhand exposure can affect your lungs, brain, and overall health. Protect your families and yourself. Inhalar el humo o el vapor de otra Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC