乌烟瘴气 [- - zhànɡ qì]The atmosphere was foul.; a pestilential atmosphere; foul atmosphere; a turgid atmosphere of ignorance and confusion; befoul the atmosphere; black smoke and pestilential vapours; pandemonium:
•¶ 他们里应外合， 把时局搞得乌烟瘴气。 Working in collusion, one from within and the other from without, they created pandemonium.