This is from EDM TOR's recap of Dubfire's Brrrrr! afterparty at Footwork:
"He [Dubfire] played on ruthlessly through the night; he didn’t even blink when a fire extinguisher randomly exploded and half of the crowd cleared out coughing and spluttering. People thought it was fog until the entire floor was filled with it and they realized they weren’t able to breathe, many people just moved to the side and continued their frolicking to the satiating beats. A typical Dubfire party: unexpected and memorable."
Gotta love it.
(Source: EDM TOR)