My first thought was also that perhaps the repulsion is for the traumas you are sharing with the T, not the T himself. And/or the shame associated with it.

I experienced strong repulsion for a T but it was definitely about him - he was just a manipulative and sloppy T who projected his own things onto me massively, it really irritated and angered me. I stopped seeing him when that became intense but the repulsion lasted much longer, even just at thoughts of him or seeing something he posted online. My other T had the complete opposite effect and I usually looked forward to the sessions because of that, it was just pleasant to talk with him or even just look at him. I personally would not see a T long-term whose presence felt unpleasant to me even if they didn't actually do anything wrong. I wouldn't be motivated and comfortable sharing my personal life with such a person.