Bacteria are living organisms and like humans they (most of them) cannot survive high temperatures, their proteins denaturate and their cell structure disintegrates. On the other hand, often it is not the organism itself that is dangerous but the toxins they excrete, which could be much more stable. Imagine food that is all covered by mold - you can probably cook or “wash” it as long as you want, you will end up with serious food poisoning.
I can only recommend to anybody reading this, do not ingest meat that smells suspicious, you can seriously harm your health. And also maybe you’d like to try out a vegetarian diet, just because you read this until the end?