CNN's Allan Chernoff reports that samples taken from a transcontinental flight found toxins in the air people are breathing. They found trace amounts of Tricresyl phosphate (TCP), a neurotoxin, which is found in engine oil. The ventilated air on the plane comes through the engine, which can contain oil particles, especially if there is a leak. Chernoff's investigation also found residue of TCP on the airplane's seats indicating they had once been in the air people were breathing. Take a look:
