My older cat has been confined into my bedroom for the past 1.5 weeks due to URI. She got it from the kitten I adopted. Kitten is healthy now. Older cat will be ready to roam the house again in a couple of days. How long does it take for the virus to die? When is it safe enough for my kitten to come in the bedroom again. I don't want kitten to get sick again. Do I need to desinfect the carpet? Thanks so much.