Do Vapes Have Second Hand Smoke Can You Get Second Hand Smoke from a Vape? News Is Second Hand Vape Smoke Harmful? PolitiFact When someone's vaping nearby, what are you breathing in? The risks of vape pens' secondhand aerosols 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% Does cannabis create thirdhand smoke? Thirdhand Smoke Resource Center Study suggests switching from smoking to vaping indoors may reduce children's secondhand exposure to nicotine