Could Seresto flea collar be making my cats sneeze?

[saladsmoothie]

Has anyone else noticed this?

Boy cat stared sneezing yesterday. No other symptoms - cheerful, active, eating well etc. Thought he prob had a cold. Am keeping a close eye and will take him to the vet if no improvement by tomorrow.

Girl cat just started sneezing this evening.

I put a Seresto flea collar on boy cat yesterday. I just put a Seresto flea collar on girl cat this evening. The sneezing was immediate.

Coincidence?

I think it's probably coincidence, but I don't know. Is it the first time you've used it? It's more likely that both are starting with cat flu. You will just have to see what happens.