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 Vaping vs Smoking vs IQOS: Which is Least Harmful? Health Risks of E Cigarettes and Vaping American Lung Association E Cig Vapor vs. Tobacco Smoke: Which Is More Harmful? White Cloud White Cloud Electronic Cigarettes