Smog has a certain genetic predisposition, so it is recommended that patients who have had smog in their immediate family within three generations should have annual checkups to determine the trend of the disease, especially for vascular lesions. However, smog is only a relatively rare disease in clinical practice, and in some cases, smog-like disease may also occur. In clinical practice, it is necessary to differentiate and diagnose, because sometimes the treatment plan for smog and smog-like disease is different. Smog-like disease is not hereditary, but is related to other factors, including alcohol consumption, high blood pressure, diabetes, high blood pressure, etc. Therefore, it is necessary to clarify the specific condition to better define which condition you are in, and to better treat it accordingly.