In secondhand vape, scientists smell risk American Heart Association Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Secondhand Vape Aerosol and Kids Kick It California Early research says secondhand smoke from vaping may not be as bad as cigarettes, but it's still not harmless. https: fox59.com news national world does vaping cause secondhand smoke doctors explain the 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%