As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT NOT GROUNDED) DIRTY SOCK SMELL/ODOR REPORTED ON DESCENT TO LAS THROUGHOUT THE WHOEL CABIN (PX NOTICE IS ALSO) CAPTIAN SMELLED IT VERY LIGHTLY IN THE FLT DECK / PERFORMED TC 21-000-001, SMELL CAN NOT BE REPRODUCED. TROUBLESHOOTING IN PROGRESS"