Fume incidents on airplanes raise health concerns for passengers, crew members

Back in February, the cabin of Delta flight 876 filled with hazy smoke mid-flight, forcing the plane to make an emergency landing .

Similar smoke or fume events happen on airliners at a rate of more than three a day, according to a CBS News review of Federal Aviation Administration incident reports. Experts say those fumes can be toxic.

Dr. Robert Harrison, an occupational medicine specialist at the University of California San Francisco who has treated more than 100 flight crew members for toxic exposure, told CBS News, "The most common problems I see are general nervous system problems."

"A person breathes [the fumes] into their lungs, it circulates around, and then it gets into their brain and can affect the other parts of the nervous system," he explained.

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