I haven’t had the problem. I have heard that if you breathe through your mouth as compared to your nose then you take in more air and that air can cause gas. Chewing gum can also cause gas, I would think because it also involves gulping down more air. Have you changed anything in your diet? Our pouches can be touchy as to what food we consume. Are you embarrassed because of smell? Is so, Devron pills might help.
If you think that there is some leakage than a way to test it is to submerge yourself in a bathtub and see if air bubbles emerge. I think that’s what Sharon had suggested. Probably best to check with her and get it straight and accurate.
Hope nothing is wrong and you can manage to adjust to it. Jan