It sounds like what you describe. He was absolutely disgusted by people eating in public. And he described it as the chewing and swallowing and noises that he couldn’t stand.
I made it a point of going to the cafeteria with him and my friends would join us - usually in a table of 10, mixed sex. In retrospect it was probably torture for him. At the beginning is when he confided with me about his phobia about eating but maybe out of naïveté I didn’t care - he was my friend and he ate with us and eventually it didn’t seem to be the big deal it was when I first met him, especially after he got a bf in the friend group.
I made it a point of going to the cafeteria with him and my friends would join us - usually in a table of 10, mixed sex. In retrospect it was probably torture for him. At the beginning is when he confided with me about his phobia about eating but maybe out of naïveté I didn’t care - he was my friend and he ate with us and eventually it didn’t seem to be the big deal it was when I first met him, especially after he got a bf in the friend group.