Nohadin gas

Nohadin gas is a poison mentioned in a scan in Metroid Prime 2: Echoes. The scan is found on a dead Luminoth in the Undertemple Shaft room of Dark Torvus. What this is referring to is currently unknown, but it may be the atmosphere of Dark Aether. However, it is also possible that this is the gas emitted from a Dark Preed when killed, as two of these can be found in the room as well.