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By Dennis Romero
A Seattle-bound Alaska Airlines flight from Chicago was redirected to Minneapolis-St. Paul International Airport Wednesday night after a strange smell was discovered and a dozen people aboard reported breathing problems, officials said.
The odor source on Boeing 737-900, which had 144 on board, has not been determined.
Four crew members were hospitalized, and another six were examined after 7:17 landing, the airline said in a statement.
Two passengers were also considered at the airport, said Alaskan airline.
An airline spokesman, Patrick Hogan, said via e-mail that patients complained of "respiratory problems". Paramedics had responded to the scene, he said.
"The cause of the smell is being investigated, and the aircraft has been removed from the service pending an inspection," Alaska Airlines said in its statement.
Passengers were offered another flight to Seattle.