Don't talk when eating

The belch may be a symptom of food allergies; try an elimination diet or get a food allergy test.

Belching is commonly known as burping. It's your body's way of pushing out excess air from your upper digestive tract. Most belching is caused by swallowing excess air. This air most often never even reaches the stomach.
https://www.mayoclinic.org › art-2...
Belching, gas and bloating: Tips for reducing them - Mayo Clinic

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https://www.mayoclinic.org

Do you gave acid reflux? A lot of issues can cause gastric gases. I found out recently that I have SIBO (Small intestinal bacteria overgrowth) which causes excess gas both directions...if you get my drift. This can be tested by a simple breath test. See a gastroenterologist if you are having stomach pain, excessive gas, indigestion, constipation or diarrhea. Treating SIBO early is important because if it goes untreated it can turn into IM (Intestinal Metaplasia) where your stomach cells change into small intestine cells. This is the 3rd phase, with the 5th phase being stomach cancer. If you have excessive gas and indigestion, see a specialist. Don't ignore it.

I used to have that problem. I take Nexium when I have stomach problems and have also altered my diet. This has elevated a lot of that problem.