Wisdom tooth extraction for 5 days with bad odor but no pain is usually caused by poor oral cleaning, and if the patient has no other uncomfortable symptoms, there is usually no need to be overly anxious. After wisdom tooth extraction, the patient’s saliva will be mixed with some bloody exudate, and the wound feels painful to the extent that he is afraid to open his mouth and move around. It is possible that he may neglect to brush his teeth or not clean properly, so that the food residue will ferment in it and thus produce bad odor. At the same time, the high temperature in the mouth and long-term wetness, which is conducive to the propagation of bacteria in the mouth, can aggravate this situation. In addition, their own original oral inflammatory diseases, such as periodontitis, dental caries, etc., more likely to occur in the case of bad breath in the cleaning is not timely. At this time, patients can brush and rinse their teeth with saline under the guidance of a professional doctor to relieve the discomfort and prevent bacterial infection from causing unnecessary oral problems. In addition to using physiological saline, you can also prepare your own warm boiled water for gargling and avoid using raw and cold water or tap water, because raw and cold water is not sterilized by high temperature and may carry certain pathogenic bacteria, and the wound is not completely healed 5 days after surgery, so it is very easy for infection to occur. If there is still bad odor and local spontaneous pain after the above methods, it is possible that dry sulcus has occurred, and it is recommended to go to the hospital to identify and give corresponding treatment in time.