1. Electronic cigarettes do not contain tar, carbon monoxide and other harmful substances in almost all cigarettes. They only contain nicotine, and nicotine itself is not very harmful. It is just an addictive thing. Of course, you can't ingest too much. If you smoke 8 packs of real cigarettes a day, you will be poisoned by nicotine. Of course, you may directly ascend to the sky with the help of other ingredients before being poisoned.
2. Electronic cigarettes hardly produce second-hand smoke, but only produce a relatively small amount of mist that does not make people feel unpleasant. Compared with second-hand smoke from real cigarettes, the impact on people around them is almost negligible.
3. Electronic cigarettes can artificially control the content of nicotine. You can gradually reduce the content of nicotine in use, and cooperate with your own will, which may eventually achieve the effect of smoking cessation.