My tortie/Maine coone mix Pidgie is sneezing up a storm again, too. I called my vet yesterday and was advised to put her back on Clindamycin. When she had sneezing fits last time, the Clindamycin cleared it up. She sneezed so hard that she actually got a nosebleed! I also have saline drops that I squirt into her nose. (Yeah, right. More like that I squirt and hope to get it somewhere close to her face. )