what is an electronic cigarette and how does it work?
Electronic cigarette. An electronic cigarette or e-cigarette is a handheld electronic device that tries to create the feeling of tobacco smoking. It works by heating a liquid to generate an aerosol, commonly called a vapor, that the user inhales. Using e-cigarettes is sometimes called vaping. The liquid in the e-cigarette, called e-liquid, is usually made of nicotine, propylene glycol, glycerine, and flavorings. Not all e-liquids contain nicotine. The health risks of e-cigarettes are uncertain, but they are likely