Talk:Fog of War/@comment-24670104-20141115172338/@comment-7971816-20141115193150

It could potentially. When I asked the writers what the deal was with acid fog (after it's mention in the past episode) they said they couldn't tell much, because the mystery around the fog would return to the series soon.

My personal guess was that the fog was a nature-occurance, like an earthquake. They didn't confirm, nor deny that statement.