I hate this sound, especially when I hear it. I think everyone hates it, and it feels very unsanitary. In fact, as long as you close your lips when eating, you won't make a sound, even if you chew, it won't be too loud, at least it won't make a squeaking sound. I tried, but as long as you don't open your mouth to eat, it will make a squeaking sound. My mother is like this, and she may have formed a habit. She thinks nothing, but to others.