JUUL E Cigarettes Harrison County Health Department Vaping is the act of inhaling an aerosol (often mistakenly called vapor) produced by a battery operated device called an e cigarette or vape. These devices heat a liquid that usually contains nicotine, flavorings, What Vaping Really Does to Your Lungs University of Utah Health Vaping: Learn the Facts Canadian Lung Association E Cigarette or Vaping Product Use Associated Lung Injury: A Comprehensive Review