E Cigs and Second Hand Vaping: Dangers and Protections ? () 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 e cigarette vape smoke exposure increased in last 4 years, contain harmful toxins: JAMA Network study ABC13 Houston Evidence Mounts About the Health Impact of Second Hand Vaping Bisnar Chase Hidden Dangers of Secondhand Vaping Emory Health Digest In secondhand vape, scientists smell risk American Heart Association