Probably not in the same way, but they might have wards which could trip interpreting you as something else. Or have nothing. Lao Five can use his teleportation to get into most places, for example.

( another sigh, and the unseen rubbing of his forehead. )

I don't think they know. I don't think they're allowed to know, and it hasn't slowed down the... presence of this place, the moving forward after that event. It hasn't been easy or sensible to outsiders, no, but some drive kept the citadel functioning even after that plague, and understanding that may be one of the keys.