cabin. so i'm swabbing here to bring samples back to the laboratory where we can determine if, indeed, there have been any toxins in the air here. >> let's have a look. >> reporter: toxicologist at the university of british columbia has studied the air quality onboard planes for years. >> you'll take this out very carefully. >> reporter: he places the air filter and alcohol swabs into test tubes. his research will extract whatever chemicals or samples captured. they also analyze some of the producer's hair to see if it collected toxins from her seat back cushion. jim runs the chemicals through a mass spectrometer. the finding, the swabs of the air cabin surface do contain the neuro toxin known as tcp, which is in engine oil.
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