Four In Ten Smokers Wrongly Believe Vaping Is As Harmful or Worse Than SMOKO E Cigarettes Many people believe that vaping is less harmful than smoking, but that's a common misconception. In fact, in addition to nicotine, vapes can contain toxic chemicals that could be linked to cancer, Vaping: The Small Habit That Hits Harder Than You Think Maryland Physicians Care Vaping exposes user to harmful levels of particulate matter, study suggests CUNY Graduate School of Public Health & Health Policy