Like, if you have a leftover piece of meat and just leave it in your house, sooner or later maggots/flies are going to be coming out of it even if there were no (visible) flies in the house previously.
Where do the original maggots even come from?
In: Biology
Maggots are the larvae of flies. For maggots to develop, a fly must lay fertilized eggs on the meat, and the eggs must hatch. This can happen at the meat shop or meat processing plant, before you buy the meat.
Cooking kills the eggs, bacteria, and other contaminants in the food. And refrigeration (the low temperatures) may prevent the eggs from hatching.
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