How dangerous IS vaping compared with smoking? New review analyzes the dangers of both. and finds former is linked to EIGHT lung diseases Daily Mail Online All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, E Cig Vapor vs. Tobacco Smoke: Which Is More Harmful? White Cloud White Cloud Electronic Cigarettes