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 smoke and e cigarette aerosol exposure in dogs and cats: A scoping review with implications for smoking cessation among pet owners The Dangers of Secondhand Smoke: Protecting Yourself from Harmful Effects