I would refer to this as rancid meat or a rancid carcass, but I don't believe there is a single specific, offical name for this.
Carnivore
it emits a smell very much like rotting flesh.
rotting flesh
rotting flesh and other maggots
They are usually the larva (grub) of flies, commonly known as maggots (or gentles). The flies (several types, bluebottle, housefly, etc) are attracted to rotting flesh and lay their eggs on the body. The maggots hatch out and feed on the rotting flesh. Eventually, they pupate and will soon emerge as an adult fly
Rotting flesh
blood, sweat, rotting flesh
Most decomposers, including worms and insects, will eat rotting human flesh. But there are no decomposers who specialize in dead human consumption.
Carrion is the name given to the rotting flesh of a dead animal. This may sound gruesome, but is a vital source of food for many animals in the wild. -For instance, in Africa when lions kill an animal they eat or carry away the tasty parts. Then after that the rest is left to animals such as hyena, wild dogs, and various birds. This is an important part of the animal food chain.
human flesh maybe but animal flesh yes
Piggy's rotting flesh (from the fire remains)
The Corpse flower is Amorphophallus Titanum. The common name comes from the smell of rotting flesh it exudes.