Flirt started sneezing shortly after going home with my friend. She would sneeze often according to my friend.
The first couple of weeks I had her, she did a "LOT" of wet sneezing, but it was clear fluid. My friend had her vet checked, and her health was fine. The vet said to keep an eye on her, and watch for colour in the fluid, and any crusting over of the nares. Not to worry about the odd clear sneezes.
Guess what.. she hasn't sneezed in a couple of weeks now

My friend had a b&g macaw, and an african grey.. I think Flirt was just sneezing out the birdy dust heheehehe.
There's only her, Yogi, and Rayray here, so not a lot of feather dust floating around.
I think she was allergic to the big birds