Hello

I bought this rat as a breeder and a couple days afterwards it started to sound a bit raspy with its breathing. Well I separated it and after about a week I noticed blood on her nose then in the morning I found that she had died.
Ok now I have a second one who keeps on sneezing and Im afraid that she has it too. I separated her from therest as well. Is there anyway to reverse RI without a trip to the vets? Im on a tight budget and to be honest these arent meant to be pets anyway... although if you ask my daughter she will tell you different.