A decade ago, the most frequent opinion among smokers was that vaping was less harmful than tobacco. But ten years on, the opposite is true: over a third say that vapes are Study: heated tobacco less harmful than cigarettes, but much more so than vapes Vaping Post Smoking vs. Vaping: Is One Really Safer Than the Other? No, vapes aren't 95% less harmful than cigarettes. Here's how this decade old myth took off