Three deadly side effects of vaping' as author of world first study says it could be 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 Four In Ten Smokers Wrongly Believe Vaping Is As Harmful or Worse Than SMOKO E Cigarettes Smoking VS Vaping: Which is More Harmful to Your Dental Health? Riverside Dental