As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ODOR IN COCKPIT AND CABIN ON CLIMBOUT FROM 4000 TO 15000 FT. RETURNED ON APPROACH AND TAXI IN. PERFORMED TROUBLESHOOTING OF ODOR IAW TSM 05-50-00-810-831-A . NO ODOR NOTED. R & R THE RECIRCULATION FILTERS IAW AMM 21-21-41-PB 401. A/C OK FOR SERVICE.