Wikipedia
Kryogenifex (based in Miami, Florida) is a cryogenic special effects company for clients in the hospitality and entertainment industries. Las Vegas's ICE club incorporates the technology. The Axis/Radius club in Scottsdale, Arizona also employs the technology. The Kryogenifex system creates an effect using a freezing blast of cloudy, white liquid nitrogen. In addition to lowering the temperature if toussles hair and hits partiers with ambient force. The systems cost more than $15,000 and use three nozzles to shoot a non-flammable mixture of liquid nitrogen compressed with carbon dioxide that fills a two-story club in about 10 seconds, according to a club director. This cools the area 20 degrees for a few seconds as a white cloud that can be colored with flashing lights fills the area. The effect costs about $75 for 30 seconds of firing.