I once had this reaction when I was a child, to an actor that was on TV a lot at the time. in the 1960's he showed up a lot on TV episodes and things; he wasn't super famous but he was one of those working actors that always turn up in bit parts and such. For some reason, I could not stand his face. Looking at him made me queasy though I never knew why.
There was nothing wrong with him -- he was just an ordinary man. But he had these strangely soft, squishy features and he always seemed to play a timid, ingratiating and sly character, who physically cringed a lot. I was a very small child but had a strong reaction to this guy's face.
I haven't thought about that in years until I saw your post!
I also had another weird "face thing" with someone else. This time it was someone in my real life, but it wasn't a sickened, queasy reaction -- it was odder than that. It was that somehow I couldn't focus on her face. It wasn't the typical aspie "face blindness" thing -- it was something different even from that, I think, because I didn't experience it universally, only with her. She was a friend of my mother's who would sometimes stop us to chat in the street in passing, and I would watch her face but couldn't seem to "anchor" onto any of her features. I was actually a very visual child as I had mildly "gifted" levels of artistic ability, so normally I "saw" things well. But this woman's face seemed to blur for me. It was very odd.
Reflecting now, I wonder if it was simply that perhaps she moved her head around a lot while talking? In my adult life I notice that if anyone is very animated and tends to make a lot of head movement while they speak, I find it extraordinarily distracting and annoying because their face "blurs" for me. To look into someone's eyes isn't always comfortable for me, but when their eyes and face are literally moving around constantly is also weird for me too.
.