Burn surgeon/Ame/longtime pilot here...
maggots generally are fairly inoffensive in wounds, but with the exception of “medical maggots” of some sort (most commonly Phaenicia Sericata larvae) they tend to mature at different rates and spread flies all over the place.
Had a guy that came in a couple of days ago a week out from a very deep burn on his mid chest that was so infested, and the critters he picked up in the field did a very nice job of keeping things clean. Sorta felt sorry to have to kill them to let him into the burn unit....