Cigarette smoking is particularly harmful to the lungs. When cigarettes are burned, they release a lot of toxic chemicals that can cause chronic lesions in the bronchi, alveoli, and trachea, leading to bronchitis, emphysema, pulmonary heart disease, and even lung cancer. Because smoke causes the epithelial cells of the bronchial mucosa and cilia cells to become necrotic and fall off, the ability to remove harmful substances is reduced, making it particularly susceptible to infection. Smoke contains many carcinogenic substances, so it can easily lead to lung cancer, which is very dangerous, especially for long-term smokers, who are more likely to develop lung cancer or other lung diseases. In addition, smoking has a greater impact on the cardiovascular system, and can easily lead to cardiovascular disease, which increases the load on the heart and increases the heart rate. So smoking has a greater impact on the lungs and cardiovascular, do not smoke, if you have a smoking situation, it is better to quit smoking as soon as possible.