Most torpedoes in WW2 were propelled by either steam, electrical or burner cycle engined (Basically a Diesel engine) with some experiments on hydrogen peroxide. Alone among all, the Japanese used compressed oxygen, particularly the Type 93 Long Lance. The compressed oxygen gave them greater range and speed than their foreign counterparts, and were also wakeless.
The downside was the compressed oxygen itself, as elemental oxygen is hideously reactive, meaning any combustion would set them off. To make things worse the torpedoes were placed next to the engine compartments. To put an example of how dangerous was this: Chokai has the indignity of being the only cruiser ever to be lost at the hands of an aircraft carrier’s guns, a 5’’ anti aircraft gun detonating their torpedo rack with a single shell.