Guidance for Secondhand Marijuana Smoke in Multi Unit Housing American Nonsmokers' Rights Foundation no smoke.org Is Second Hand Vape Smoke Harmful Secondhand smoke and secondhand aerosol 5 Vaping Facts You Need to Know Johns Hopkins Medicine Millions of people are exposed to secondhand smoke every day. People living in multi unit housing are some of the most exposed. The only way to fully protect people from secondhand smoke at More middle and high schoolers are getting exposed to secondhand vape aerosols, study indicates The Boston Globe Secondhand Smoke and Electronic Cigarette Aerosols US EPA