Vaping: How E cigs Work (Infographic) Live Science 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. Most smokers wrongly believe vaping is at least as harmful as smoking UCL News UCL University College London To learn more about the health effects of vaping and asthma, visit https: bit.ly 45dizbM.