(Now if I see a baby or kid or toddler or child naked it does nothing for me. )
That's the good thing right there. If you were a pedophile then you'd be attracted to the kids with or without the diaper.
If seeing them without the diaper or fully clothed doesn't turn you on. Then you're not a pedophile and you're just attracted to the diaper that the child is wearing.
Though I'd try to control yourself not looking at kids in diapers.