HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below. ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Should I Be Concerned About Secondhand Vaping? The health risks of secondhand smoke are widely understood. But what about secondhand vaping? Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM According to a Centers for Disease Control and Prevention (CDC) study, 40% of U.S. adults believe that children's exposure to secondhand aerosol from e cigarettes causes only some or little harm, and 5%