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% In secondhand vape, scientists smell risk Health cherokeephoenix.org Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Second hand e cigarette vapour increases risk of poor respiratory health, study finds Nursing in Practice