(NewsNation) — A dire warning has been issued for flyers as doctors warn toxic fumes leaking into some plane cabins may be giving pilots, flight attendants and passengers brain and nerve damage.

The Federal Aviation Administration has received thousands of reports since 2010 about toxic fumes bleeding into cockpits and cabins, the Wall Street Journal reported.

The incidents stem from a system known as “bleed air” that pulls breathable air through the aircraft’s engine, the Journal's investigation found.

"While the FAA does not have a definition for a "fume event," airlines are required to file Service Difficulty Reports (SDRs) when smoke, vapor or noxious odors enter the cockpit or passenger cabin," the FAA wrote.

The increase in reports is largely driven by Airbus A320s, which are use

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