The cost of bypass surgery for smog is roughly around $30,000, but of course this is affected by many factors, and there are some differences with the condition of the individual and the medication used for treatment. Therefore it is not good to generalize and depends on the specific condition. Smoker’s disease is an abnormality in the development of the blood vessels of the cranial body, where there is a narrowing and occlusion of the siphon segment of the internal carotid artery, or the beginning segment of the anterior and middle cerebral arteries, which can affect the blood supply to the brain. In addition, it can cause the formation of peripheral collateral circulation. This leads to an abnormal vascular network in the cranial body, which can easily lead to cerebral ischemia and cerebral hemorrhage, and therefore has a significant impact on the health of the body. Therefore, if the examination reveals the presence of smog, it should be actively treated. Smog is not treated conservatively with medication and requires surgery. The current surgical procedure is bypass surgery or vascular patch surgery, both of which can effectively improve the blood supply to the brain and prevent and reduce the chances of bleeding and infarction.