As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT WE NOTICE A DIRTYSOX SMELL I (CAPTAIN) NOTICED IT AS WE BEGAN DESCENT. F.O. NOTICED IT BEFORE. INTENSITY WAS LEVEL 1-2 WEAK TO MODERATE INTENSITY FA "D" ALSO NOTICED THE ODOR IN THE BACK OF AIRCRAFT. F.O. REPORTED FEELING A HEADACHE. I (CAPTAIN) EYES FELT IRRITATED ODOR APPEARED TO BE COMMING FROM VENTS. GROUNDED - YES. ON DEFERRAL.