Tobacco E liquid Armes & Liquides Vaping: Know the Dangers Rady Children's Health Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. Toxicological Effects of E Cigarettes on Cells, Animals, and Humans and Mechanisms of Toxicity Springer Nature Link Health Effects of Vaping Smoking and Tobacco Use CDC