Rocky our male AKita, and Pepper our current Terrier
also reverse sneeze. Many years ago, we had a terrier
who reversed sneezed, and I was terrified the first
time I heard it. Took her to the vet,
and that's when I learned about reverse sneezing.
I believe Reverse Sneezing is a temporary spasm of the
throat muscles.
So as long as our dogs are perfectly normal before and after
their attacks I do not worry about it.

(Asthma/allergy is different, and a vet can give you medication to
treat if necessary.)