This clip comes from Pokemon Stadium, the Nintendo 64 game that brought Pokemon battles to 3D arenas, where status effects like poison had their own distinct audio cues. Short game sounds like this one are easy to lift, loop, and reuse, so they have long lived on soundboards and in fan edits long after the original console era. It survives because the hiss is instantly readable as toxic or unpleasant, making it a quick shorthand for bad smells, bad ideas, and bad luck in short videos.