Electronic cigarettes are battery-operated, and they produce a lot of vaporized nicotine, or non-nicotine substances, for smokers to inhale. E-cigs are aimed to give a similar feeling to inhaling tobacco smoke, with the smoke. Known as vape
A possible reason why people vape is to stop smoking. It has been invented to suit such purpose, aside from nicotine patches. It makes you move in a good direction, especially that smoking causes many health problems.