Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA Secondhand Vape Exposure: Effects, Who's at Risk, and More What is Thirdhand Smoke? Thirdhand Smoke Resource Center How Bad Is Second Hand Vape Smoke Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine,