It affects lungs due to breathing it in thats when it causes the most harm are lungs weak to things in the air. So when the smoke goes in the lungs it could inside burning and many other things one of the most known lung cancer.
When you smoke, you inhale all of the toxic materials such as tobacco into your lungs. Eventually, smoking for long periods of time can cause lung deterioration, and can also spread to your blood which will cause other serious complications.
