How Do E Cigarettes Work: A Complete Guide to Vaping Technology With SMOKO SMOKO E Cigarettes Combusting Tobacco & Cigarette Smoke Most Toxic Cigarette Brands Are Cigars Safer Than Cigarettes KHOOR Herbal Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes,