Smokers are prone to have nodules in their lungs and other lesions inside their lungs. After all, smoke is a hot toxic gas, which enters the lungs and is very toxic to the mucosa of the airways and the mucosa inside the lungs. These toxic things repeatedly irritate our chances and tend to develop proliferative reactions in some places. Nodules are still mild, and some are even prone to cancer. Smoking also makes the lung tissue harder or more brittle, so it tends to cause inflammation of the airways, and the swelling of the airways later leads to obstruction, which in turn triggers the destruction of the alveoli to form emphysema. Emphysema has to be repaired because the alveoli are broken, and in the process of repair there is also a tendency to have some excessive hyperplasia, as well as some nodule-like hyperplasia. Therefore, smoking is very harmful to the human body, especially to the lungs. If nodules are found in the lungs, the first thing you need to do is to quit smoking, and only after you quit smoking can you do lung clearing and phlegm removal. If you don’t quit smoking, even if they give you lung clearance and sputum removal to help eliminate the nodules, but how much to eliminate and how much to smoke back, the lung nodules can no longer be treated.