As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT ODOR ON DESCENT. TURNED OFF PACK 1. ODOR CLEARED. FA'S NOTICED NO ODOR. UPON APU START PACK #1 EMITTED ODOR ONLY IN COCKPIT. SELECTING OFF CLEARED ODOR.-PERFORMED DECONTAMINATION PROCEDUE OF THE ECS IAW AMM 21-00-00-615-803-A. NO FUME FOUND. THIS CLEAS DMI. MOC NOTIFIED.. PLACARD REMOVED.