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 Vaping: The Good, the Bad and the Popcorn Lung MPH Online Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Vaping's Harm to Vascular Health CTVS Texas Smoke and Mirrors: The Myth of Healthy Vaping University of Utah Health