Thank you Jan and Debbie. (Thanks for the hugs Debbie, I really need them.)

From day one, Popeye has been in my room with no direct contact with the other cats. But as the vet said, just by me opening and closing the door could do it, but he was glad to know that my cats have been vaccinated.
After I come out of the room from being with Popeye, I go straight into the bathroom, wash my hands real good, dry them and then put on some hand sanitizer that is suppose to kill 99.9% of germs.
I also put a system in my window tonight, that has two fans in it. One fan blows in the air from outside and the other blows out the air from the room. I also sprayed the room and the house with Lysol disinfectant that kills viruses, bacteria, mold and mildew. It's suppose to kill 99.9% of germs in 10 seconds. I just wish I had thought of doing this from the beginning. I just hope that the old saying, "It's better late than never", holds true.

I forgot to mention that I also got some Nutri-Cal to give him.