So we recently got a third cat. Well, more like my sister got us a third cat. It turns out that this kitten passed on his upper respiratory infection to my other two cats. My sister claims the shelter she got him from they said he had his shots and was healthy. So now all three cats have this cold, my female cat seems to be the worse of the three. Is there any home remedy I can do or any cat brand medicine I can buy to help them get over this? I know I will be told to take them to the veterinarian, which I plan to, but I just wanted to know if there are any remedies I can do at home.