Bloomberg School of Public Health Teaching & Research Additions Ziger Snead Architects Vaping Side Effects & Withdrawal Symptoms. What is the Difference Between E Cigarettes, Vaping, and Smoking? E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA The Johns Hopkins Institute for Global Tobacco Control's VAPER Study collected data on the most commonly used devices and liquids by U.S. adults who frequently use e cigarettes, along with related use