As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNUSUAL ODOR IN CABIN DURING TAKEOFF AND CLIMB. ODOR DISAPPEARED AS ALTITUDE INCREASED. NO SMOKE, NO FUMES. PACKS AND ALL OTHER SYSTEMS OPERATED NORMALLY. CABIN CREW REPORTED SLIGHT ODOR DURING APPROACH / R&R RE CIRCULATION AIR FILTERS PER AMM.