Hidden Dangers of Secondhand Vaping Emory Health Digest Tobacco Smoke, Vaping, and Asthma AAFA.org 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 aerosol Does Vaping Cause Secondhand Smoke? Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA