? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Scientists Warn Against Breathing in Secondhand Vape 'Smoke' Newsweek Secondhand Smoke Vermont Department of Health Secondhand vape plumes could form lung damaging radicals American Chemical Society The health risks of secondhand smoke are widely understood. But what about secondhand vaping?