A wisdom tooth extraction with a smelly mouth generally indicates that there is obvious bad breath, which may be caused by inadequate cleaning or infection. It is necessary to determine the cause according to the symptom performance and clean the mouth or seek medical treatment. If the bad breath is obvious after wisdom tooth extraction, it is mostly considered to be an infection at the alveolar fossa of the trauma, which is caused by dry socket due to mixed infection under the joint action of aerobic and anaerobic bacteria, and is often accompanied by severe pain and visible empty alveolar fossa in addition to obvious bad breath. If you do not brush your teeth and rinse your mouth for a few days after wisdom tooth extraction may also cause bad breath, the odor is usually not as obvious as the alveolar disease, and there is no severe pain, it is recommended to go to the hospital in a timely manner to clearly diagnose and treat: 1. Etiology: If the entire mouth is smelly, and there is no obvious pain, it may be caused by not doing a good job of oral cleaning, food residues and other substances left in the mouth so that the bacteria breeding; in addition, bacterial growth can also cause alveolar In addition, bacterial growth can also cause poor healing of the socket, blood clot loss or necrosis in the wound after tooth extraction, and obvious putrid smell in the extraction site, which is medically known as dry socket, mostly occurs 2-3 days after wisdom tooth extraction, generally manifested as light pain in the first 1-2 days after tooth extraction, followed by increased pain, accompanied by bad breath, and can be seen in the cavity of the extraction site; 2, treatment: if there is no concomitant infection, tooth brushing or scaling treatment can be carried out. If infection or even dry socket is suspected, patients are advised to actively seek medical advice, remove food residues and foreign bodies from the mouth, clean and disinfect the infected area, fill the socket with iodoform, etc. as appropriate, and use anti-inflammatory drugs such as metronidazole and amoxicillin as reasonably prescribed by the doctor, and use ibuprofen and other drugs when the pain is severe. After treatment, patients should pay attention to maintaining oral hygiene, avoiding spicy and stimulating foods, and informing the doctor of any discomfort in a timely manner.