E cigarette Characteristics, Safety Issues, & Regulation Britannica Daily e cigarette Use Rising Despite Slight Decline in Current Use Among Youngest Adults DAIC 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 E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA