Humans have apparently been testing this stuff since the '50s and experiments on rats breathing in perfluorocarbon were done in the '60s, and humans in the '70s

Humans have apparently been testing this stuff since the '50s and experiments on rats breathing in perfluorocarbon were done in the '60s, and humans in the '70s, and that'd be where James Cameron got the idea. https://www.todayifoundout.com/index.php/2021/08/can-humans-breathe-liquid-like-in-the-abyss/ https://www.todayifoundout.com/index.php/2021/08/can-humans-...