Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Juul study shows secondhand vaping emissions are less toxic than cigarette smoke Tobacco Smoke, Vaping, and Asthma AAFA.org Is Second Hand Vape Bad? Sikary Vape Official Website Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN