Not to keep screaming my own theory every time someone says something related, but....i think Harry is infected, has been since he was 16. We have no evidence, that I can think of, to define outsiderbane. It could as easily mean the person who defeats the outsiders as much as it could mean immunity to them. So I think, for the reasons already stated, Mab, Rashid, Uriel, Odin are not infected because too powerful. Infected would be the end of the story. The logic against Lara being infected makes sense. Other than that..'Everyone's a suspect.'