Last week my boy Basil started to sneeze and snuffle and, he also stopped eating. The vet gave him antibiotics and he is on the mend. Had it just been the sniffles I probably would not have worried as much. I guess if Dot is still eating and seems well, the likelihood is that it's the dust and dryness. However, the vet did explain that although Basil had had all of the proper vaccinations, just like the human flu vaccine, they can't always protect against every single strain so, if Dot continues to sneeze or loses her appetite, I'd take her to the vet, just to be sure.