As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT WE OBSERVED DIRTY SOCK SMELL 5 TIMES WITH SHORT DURATION IN CRUISE. THEN AFTER LANDING, SMELL WAS CONSTANT.-PERFORMED TROUBLESHOOTING OF FUME EVENT IAW TSM 05-50-00. R/R BOTH RECIRCULATION FILLERS IAW AMM 21-21-41. FOUND NO FUME SMELL OE ODERS. A/C OK FOR SERVICE