The odor of what comes out of picking your teeth is mainly the odor of bacteria fermenting food after a food impaction. During chewing, food is wedged into the gap between two neighboring teeth by occlusal pressure, known as food impaction. If food impaction is not cleaned in time, it can cause bacterial colonization. Bacterial colonization and fermentation will result in a foul odor, which may also cause the things you pick out of your teeth to smell bad. In addition, food impaction can also cause gum recession, gingival papillitis, adjacent surface caries, alveolar bone resorption and so on. Therefore, if there is food impaction, it is recommended to clean in time, you can brush your teeth, rinse your mouth, use dental floss and so on. If necessary, hospital consultation to identify the cause of food impaction, under the guidance of the doctor to give targeted treatment or treatment.