<human>: How does the e-cigarette work?
<bot>: The e-cigarette is a battery-powered device that simulates smoking by vaporizing a solution containing nicotine, propylene glycol and/or vegetable glycerin. When you inhale from the device, the user feels a puff of vapor which contains nicotine and other chemicals that are inhaled into the lungs. These chemicals are then absorbed into the bloodstream and eventually reach the brain. This process is similar to smoking traditional cigarettes, but without all of the harmful effects of smoke inhalation.