Rapid fire multi-sneezer turns into a double sneezer

[Chillted96]

I girl I talk with has always been a rapid fire sneezer, and usually sneezed between 6-10 times. Occasionally she would sneeze just two or three times but it was very rare. It didn't matter what the trigger/irritant was. No matter what it was, it would set off a fit of 6-10. Now no matter what she does she can't get out more than two, she's even tried chhinkni with no success. What would cause her sneeze pattern to change out of the blue like that?