User blog comment:Shadow001/Revelation/@comment-68.184.20.102-20111019213556/@comment-68.184.20.102-20111020011618

Well, there are two versions of Joker venom, one that kills people and one that doesn't kill people, but can leave the victims permanently brain damaged....both are bad either way. I have a feeling that the Joker Venom that was the episode was the leathel one. It makes sense especially when Batman quickly told the others not to breath, when the Joker released his joker venom a second time.