First i just have to comment on what a gorgeous kitty Chloe is, her markings are beautiful, she is a real stunner, as for the cold, last year my older cat Ash was quite sick, we took him to the vet, who treated him as if he had a dose of the cat flue, although he is vaccinated against it, he recovered but kept sneezing for months afterwards, I now notice this winter he is sneezing again constantly, I believe he has allergies, as he is not sick in any way at all, so perhaps that could be kitties problems too, just a thought I wanted to pass on.