Researchers Warn of Potential Harm From E Cigarette Secondhand Vapor AZPM ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, The Impact of E Cigarettes and Asthma: What You Need to Know Does Vaping Cause Secondhand Smoke? How Second hand Smoking Affects Pets HEALTH Does vaping cause secondhand smoke? Doctors explain the side effects: Details below.