Asthma and Allergy Foundation Tobacco can be bad for your health even if you are not the one smoking. Breathing in the smoke can lead to many health problems. Vaping is Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Guidance for Secondhand Marijuana Smoke in Multi Unit Housing American Nonsmokers' Rights Foundation no smoke.org Secondhand Cannabis Smoke Learn About Cannabis Secondhand Smoke Social Media Message Library Tobacco Education Clearinghouse of California