A professor at a Hong Kong school showed his students a video from which they can learn how much lung damage can be caused by only 60 smoked cigarettes.
The professor uploaded the video he made on YouTube so other people can see the harmfuleffectsofsmoking. During the experiment, the professor showed his students healthy pair of lungs which were “breathing” clean air and pair of lungs exposed to cigarette smoke.
The healthy pair of lungs has pink color and the unhealthy ones have yellow-brown color and visible damaging.
See the video below.