Tobacco needs to be lit and smoked. Continuous combustion at 700-800℃ releases harmful substances such as nicotine, tar, carbon monoxide and solid particles.

Among them, nicotine is mainly responsible for addiction, while tar, carbon monoxide and solid particles are the most harmful substances to human body. After entering the human body, it will damage the lungs, heart and central nervous system. Because e-cigarettes do not contain tar, relatively speaking, cigarettes will hurt the lungs more.

Electronic cigarettes also contain a certain amount of nicotine. Although it is harmless to the lungs, it will also cause certain irritation to the teeth, throat and nasal cavity after inhalation, so it is also harmful.

Moreover, the smoke produced by e-cigarettes also contains certain particles, which will be deposited in the throat, trachea and other places after absorbing moisture. If there is inflammation in the throat, trachea, lungs and other places, then smoking e-cigarettes will cause cough symptoms at this time.