As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT ODOR OIL SMELL - DURING LAST COUPLE OF FLIGHTS, HAD NOXIOUS FUMES AND "DIRTY SOCK" SMELL IN THE COCKPIT. VERIFIED DISCREPANCY, INSPECTED SYSTEM GAINED ACCESS TO WATER SEPARATOR AND FOUND CONDENSER BAG DIRTY. REMOVED CONDENSER BAG AND INSTALLED A NEW BAG IAW AMM 21-51-00 LEAK AND OPS CHECK GOOD. NO FURTHER ODOR DETECTED.