Secondhand vaping: The latest vaping health risk CNET Secondhand Vape Exposure: Effects, Who's at Risk, and More 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 e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN