As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED A DIRTY SOCK SMELL AND PHYSICAL SYMPTOMS INCLUDING HEADACHE AND THROAT IRRITATION. OTHER FLIGHT ATTENDANTS LATER REPORTED SIMILAR SYMPTOMS, BUT NO PASSENGERS WERE AFFECTED. FLIGHT DIVERTED TO BNA AS A PRECAUTION. MAINTENANCE FOUND HYDRAULIC LEAK AT RIGHT WHEEL WELL BRAKE CONTROL VALVE UNION. REPLACED DAMAGED O-RING, PERFORMED APU LOAD COMPRESSOR WASH AND ECS DECONTAMINATION.