I have exactly the same. Therapy doesn’t work. There is no cure other than faking it. You have to let your rational mind win from that primal repulsive feeling. I also feel immense guilt for feeling this way about innocent little humans.
I still avoid children when I can. This has created a gap between my friends and me, they all have kids. I never go to their place, we always meet in public. I never told them but I think they know, because they don’t treat me differently when I tactically withdraw when children get involved.
Interestingly this is measurable. I have a garmin watch and whenever children are close for 15 mins, I get a relaxation reminder telling me to do breathing exercises. So this mental defect manifests itself physically.