Secondhand vape exposure detectable in children's saliva, breath Contemporary Pediatrics Secondhand vape exposure: Risks and side effects 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% Secondhand smoke and vape can trigger your child's asthma attacks. Smoking and vaping are unhealthy for everyone but especially harmful for people with asthma. Whether at home, in the car, or Don't Be Fooled, E cig Aerosol Is Not Harmless for Kids American Lung Association Can I be Affected by Secondhand Vape Smoke?