Lots of modern English words arose from misspellings (and mishearings) - if one becomes popular, it becomes an English word. That’s how languages evolve, otherwise we’d still be speaking Proto-Indo-European.

Plenty of words are like that. "Apron" was originally "napron" but due to confusion from "a napron" sounding like "an apron" it changed that way.

I personally have always said "kerfluffle", not kerfuffle.