I was thinking of the old aspiration of filling up the lungs of divers with the oxygen carrying fluorocarbon fluid (like in Abyss). It was deemed apparently imp

I was thinking of the old aspiration of filling up the lungs of divers with the oxygen carrying fluorocarbon fluid (like in Abyss). It was deemed apparently impractical because it's too hard to breath. Well... you don't need to breathe with this.