Public Health Consequences of E Cigarettes Want to quit smoking? Vaping is not the answer Nonnicotine vapes may be marketed as safe, but many still contain chemicals, have unknown health effects, and aren't FDAregulated. Teens are using them more ofteneven alongside nicotine vapes. No ecigarette is riskfree. Most smokers wrongly believe vaping is at least as harmful as smoking UCL News UCL University College London No, vapes aren't 95% less harmful than cigarettes. Here's how this decade old myth took off