A YouTube user shared a shocking video showing the damage to lungs and throat caused by smoking only one packet of cigarettes.
Chris Knutab conducted his own experiment to simulate the effects of harmful smoking on the body, in order to encourage the cessation of smoking.
The test tools consist of a glass container and cotton balls, as well as a suction pump and cigarette smoke absorption.
After smoking about 20 cigarettes, cotton balls (lungs) turned brown, caused by toxic chemicals.
The video also shows the blockage of the pump tube (throat) with a viscous liquid.
Cigarette smoke contains more than 4,000 chemicals, 43 of which are known to cause cancer, and 400 other toxic substances, including nicotine, tar and carbon monoxide, as well as formaldehyde, ammonia, hydrogen cyanide and arsenic.