I remember a few years ago, a Mexican child was cured of rabies by placing it in an oxygen chamber. I think a high pressure oxygen chamber.
I recall a “rabies survival” story that was from something like Readers’ Digest. The victim, as the story would have it, often does not succumb to anything other than asphyxiation, and if ventilation can be maintained it is possible in principle for the rabies infection to run its course and be overcome by the body and the victim recovers (though certainly with a nightmare experience). I don’t know how to evaluate such claims. I’m not a doctor. Maybe two docs and a vet might know more.