I have a Bourbon Red hen who is sneezing with virtually each breath. What do I do? I swabbed some VetRX on her beak and neck the other day but it seemed to have no effect whatsoever, so I haven't done it again because she seemed traumatized by the handling and I don't want to make her worse. She has no apparent drainage from her nose or eyes. Any suggestions? The other two hens and the tom are all apparently fine.