When air flows through the device, it is detected by a microprocessor. This microprocessor then activates an atomized cartridge which injects tiny droplets of the liquid into the flowing air. This produces a vapor mist which is inhaled by the user. The addition of propylene glycol to the liquid makes the mist better resemble normal cigarette smoke. The microprocessor also activates an orange glowing light at the tip to simulate real smoking experience, Quit smoking.