Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Health Effects of Vaping Smoking and Tobacco Use CDC 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 Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA More middle and high schoolers are getting exposed to secondhand vape aerosols, study indicates The Boston Globe Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA