Secondhand e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC7 Chicago Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA In secondhand vape, scientists smell risk American Heart Association Chugachmiut See the sites below for more information on secondhand smoke: https: www.healthline.com health second hand vape#at risk groups https: www.webmd.com lung cancer guide vaping lung cancer#:~:text=Ecigarettes%2C%20sometimes%20called%20vapes