5 Vaping Facts You Need to Know Johns Hopkins Medicine Health Problems Caused by Secondhand Smoke Smoking and Tobacco Use CDC Secondhand smoke and secondhand aerosol Second Hand Vaping: Minimal Impact Compared to Smoking Smoking and vaping are often compared, but neither is harmless. While they work differently, both can expose the lungs to addictive nicotine and harmful chemicals that impact breathing and overall health. Smoking Is Vaping as Bad for Your Health as Smoking? Connect Community BCBSIL