Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports 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 Cotton Candy Hookah Pen Nicotine Free Vape Blakk Smoke Is Vaping Without Nicotine Safe? V2 Cigs UK