Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Secondhand smoke from vaping could be harmful to children: study ABC13 Houston Do Vapes Have Second Hand Smoke Can You Get Second Hand Smoke from a Vape? According to a Centers for Disease Control and Prevention (CDC) study, 40% of U.S. adults believe that children's exposure to secondhand aerosol from e cigarettes causes only some or little harm, and 5% Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine