No, vapes aren't 95% less harmful than cigarettes. Here's how this decade old myth took off 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. Dangers of Vaping: Why E Cigarettes Are Harmful to Health 5 Vaping Facts You Need to Know Johns Hopkins Medicine Public Health Consequences of E Cigarettes