Cavities in the hole stink, it may be due to tooth decay to form a hole, and there is food embedded, a long time without cleaning, it is easy to produce acid fermentation phenomenon, so there will be a bad smell, and the food will also produce a bad smell, and the gums will be overflowing pus phenomenon, pus will also have the phenomenon of bad taste in the oral cavity. Teeth are corroded, cavities appear, the mouth will also appear odor. If plaque or calculus is not cleaned, the gums will also recede and the odor will recur. Therefore, once the tooth decay is found on weekdays, it should be filled in time. If it is not repaired in time, it will cause the embedded food, and there will also be overflowing pus in the gums, a large amount of putrefactive substances, and there will be the phenomenon of bad breath. In the bad to deep caries if not timely treatment, there will be symptoms of pulpitis, then need to kill the nerve, and after killing the nerve also need to do porcelain crown repair, spend the price is also more. Therefore, once the caries, it is recommended to repair in time, and should be regularly checked periodontal and dental health.