A YouTube user has shared a shocking video showing the damage to your lungs and throat that is caused by smoking just one pack of cigarettes.
Chris Notap carried out his own experiment to mimic the effects on the body in the hope it will encourage people to quit for good.
He fills a jar with cotton wool balls and uses a suction pump to suck the smoke from cigarettes which is pulled through the jar.
After 20 cigarettes are ‘smoked’ through the make-shift ‘lungs’, the cotton balls are left a revolting brown colour from the toxic chemicals.
The clip also shows the pump’s tube, which represents the throat, clogged with a sticky brown gooey tar.
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