I'm not sure what other people experience. In myself, I mostly found sneezing involuntary, until I learned to mediate it. Perhaps your skill is an example of

I'm not sure what other people experience. In myself, I mostly found sneezing involuntary, until I learned to mediate it. Perhaps your skill is an example of having made the change when you were young. Now you've had a lot of practice. When I was 8 years old a kid at school taught me how to wiggle my ears. I can do it good - like Dumbo the elephant. Nobody else I know can do it or learn it. It seems to be something best learned young.