Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram Smoking VS Vaping, the facts. Prime Vapes UK E cigarettes or Vaping: E cigarettes, also known as vapes, are battery operated devices that heat a liquid and produce an aerosol. An aerosol is a mix of small particles released in the air. Some Illustration of the four generations of e cigarette or vaping products. Download Scientific Diagram Difference between heated tobacco products and e cigarettes PMI Philip Morris International