I need Ideas!

[Pandabears514]

Hey, I really need sneeze scenarios a little more unique than a cold.  Thanks and don't be afraid to go into detail.

[frolicking periwinkle]

How about an allergen to something someone has sprayed in the room?  So they can't identify it automatically, but the person's eyes get teary, nose and throat get hot and itchy.  Nose start to run, mouth salivates, and the sneezing is violent as the body tries to rid itself of the unidentified allergen.