What is the origin of the phrase "cheesed off?"

Cheesed off - bored, disgruntled, disgusted
The earlier expression 'browned off', which meant the same, was RAF slang originally used of metalwork that had become rusty; it was later applied figuratively to human degeneration. Cheesed off may be an elaboration of this, in reference to the browning of cheese when cooked, or a quite different allusion to the sourness associated with cheese going bad.