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Fog vapor causes burns at Hollywood pre-party for Teen Choice Awards

LOS ANGELES -- More than a 20 people, including some teenagers, suffered respiratory irritations and burn injuries Saturday evening after exposure to "theatrical fog vapor'' at a pre-party for the Teen Choice Awards in Hollywood, a city fire official said.

Witnesses said the incident at the Avalon Hollywood resulted in chaos, calling to mind for a panicked moment Friday's shooting massacre at a movie theater in Aurora, Colo.

The incident was reported at 6:04 p.m. at 1735 N. Vine St. (map), Brian Humphrey of the Los Angeles Fire Department said.

See the original report at NBCLosAngeles.com

Rescuers believe a special-effect fog system caused the injuries. Most victims felt better after fresh air and examination, Humphrey said.

"Along with respiratory irritation, a few patrons who contacted dripping liquid from apparent heavy use of smoke effect have superficial burn (injuries),'' Humphrey said.

Six people were taken to hospitals in unspecified condition. A total of 22 patients were assessed, according to Humphrey.

A hazmat team was investigating, Humphrey said.

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The party was called off after the incident, he added.

Vine Street was closed between Franklin Avenue and Hollywood Boulevard while the group was assessed, he said. 

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