Parents using e cigs expose kids to dangerous secondhand vapor Futurity ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Secondhand Vape Exposure: Effects, Who's at Risk, and More Secondhand Smoke and Secondhand Vaping: Both Bad for Kids University Hospitals Secondhand Smoke and Electronic Cigarette Aerosol Resources US EPA