A Quokka Dreeds its Weird

And cold. I remember that he wrote a short story titled IIRC "Cool Air", but I can't remember what it's about. I also have a vague idea (that much less than an actual memory) that he wrote a story about somebody who goes into cryogenic suspension and is woken up to find that something from beyond crawled into his brain while he was frozen and is slowly driving him insane/taking over his mind, but I have no idea if that's an HP thing, something I dreamed, something somebody else entirely wrote, or what. Yay memory like a thing with holes that is made from rotted milk!