As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ODOR/ FUME EVENT SHORTLY AFTER TAFEOFF SELECTED PACK 1 OFF SITUATION RESOLVED, ONLY FLIGHT DECK AFFECTED.-PERFORM TROUBLESHOOTING IAW TSM 05-50-00-810-831-A AND FOUND PACK 1 TO BE THE SOURCE OF ODOR. SEE L/P 3274842-1 FOR PACK 1 DEFERRAL. AIRCRAFT OK FOR SERVICE.