Howdy! So, about two weeks ago I got two young rats as a Christmas gift. When I got them, the store gave me a powder (i forget what its called) that I had to put in to their water for a week. This was to help flush out their systems, because all the rats were sick. One of the rats has gotten better, her sneezing has ceased almost entirely. However, the other one isn't faring as well. Her breathing is fairly loud, it almost sounds like a little honk or trumpet. No sneezing, but very strange, harsh noises. Never noticed any discharge on either rat for the duration I have owned them. They are both about two months old. I called up the pet store and may just get some more of the powder, but I may also just go ahead and purchase medication. Any advice?