Oh, my! In some ways, I think the belching is worse because it’s usually somewhat controllable, which is not always the case with the other bodily sound.
In my childhood home, everyone avoided making gassy sounds from either end. I was appalled when I experienced “body concerts” out in the world, particularly around adults in the deep rural South where “gas music” was greeted with laughter and jokes, making it all the more appealing to share with an audience. I knew children and teenagers sometimes considered gassy sounds to be entertaining but it was a stage to be outgrown. How shocked I was to be around adults who made no attempt to control or hide their gas emissions!