Toxic Fumes Are Leaking Into Airplanes, Sickening Crews and Passengers

September 15, 2025

Airplane flying in the sky

(Wall Street Journal) – Doctors compare brain effects to concussions in NFL players. A Wall Street Journal investigation shows the problem is getting worse and not much is being done about it

After months of worsening symptoms, Chesson was diagnosed with a traumatic brain injury and permanent damage to her peripheral nervous system caused by the fumes she inhaled. Her doctor, Robert Kaniecki, a neurologist and consultant to the Pittsburgh Steelers, said in an interview that the effects on her brain were akin to a chemical concussion and “extraordinarily similar” to those of a National Football League linebacker after a brutal hit. “It’s impossible not to draw that conclusion,” he said.

Kaniecki said he has treated about a dozen pilots and over 100 flight attendants for brain injuries after exposure to fumes on aircraft over the last 20 years. Another was a passenger, a frequent flier with Delta’s top-tier rewards status who was injured in 2023. (Read More)