Secondhand smoke and secondhand aerosol From flavor bans to secondhand aerosol exposure, there's a lot people don't realize about how vaping impacts health, policy, and safety. Flavor restrictions can change tobacco use patterns, influence black market 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 Tobacco Smoke, Vaping, and Asthma AAFA.org Should I Be Concerned About Secondhand Vaping?