As suspected a bad cold (Ive never seen a cat with a full blown cold before) and respiratory infection.
He's had a couple of injections today - and then tomorrow starts a one week course of anti-biotics.
Poor chas - for about the first 10 years he never saw a vet aside from the usual stuff - and a fight with a dog. But he seems to be suffering now... its so pitiful to watch him try and meiow and nothing at all come out of his mouth.
tbh I dont think hes ever been right since he was very poorly earlier this year and probably being locked in somewhere for a week with no food for a week hasnt helped much. So its lots of TLC