As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 9602378) STRONG ODOR AFTER TAKEOFF SMELLED LIKE A DIRTY AIR CONDITIONING PACK. SMELL CAME BACK ON LANDING APPROX SIX THOUSAND FEET. NO DISCREPANCIES NOTED, NO FUMES, SMOKE OR ODOR DETECTED. REMOVED AND REPLACED RECIRC AIR FILTERS PER B737 AMM 21-25.