A foul smell in the throat itself is caused by reflux or indigestion. If there is often acid reflux and heartburn, there will be an unpleasant smell in the throat, and when the diet is improper, such as after overeating and drinking a lot of alcohol at night, the food is neutralized in the stomach with stomach acid, and it cannot be well ground to be digested, and the resulting hangover will have a very unpleasant smell and a foul smell in the throat. At this time, we must adjust the diet structure, avoid overeating, abstain from alcohol, especially at night should eat less mainly, and eat more fresh fruits and vegetables. If it is caused by reflux, such as acid reflux and heartburn that lead to odor in the throat, you can add motivational drugs or acid suppressants to help relieve the symptoms. If it is caused by indigestion, digestive enzymes can also be added to help relieve the symptoms.