I love that you set up the humidifier for them, how nice!!
Well I was just trying to do what I did a few weeks ago when I had a URI. It was also scary seeing him with his mouth wide open gasping for air. He had snot bubbling out of his nose (and at least when I'm sick I have kleenex). His eyes were so watery, and there really wasn't much I could do about it. So I figured the humidifer would work.
Tibby is doing well she's still a little sneezy but other than that she's fine. Corkscrew still hasn't eaten, but he's been sleeping a lot now that he can breathe. I think the shots really helped him.
Oh and the vet techs and vet got a good laugh when they asked if he'd been acting differently and I said "yes, he hasn't bitten me in two days so I know something must be wrong." When I left they said that they hope he gets back to bitting me again soon.