As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NOXIOUS FUMES DETECTED IN FLIGHT DECK AND CABIN. IN DISCUSSIONS WITH MOC RECIR FAN SELECTED OFF, C/B PULLED AND ODOR RAPIDLY DISSIPATED. RESOLUTION: LT CABIN AIR RECIRCULATION FAN REPLACED IAW AMM 21-25-01, PB 401. FUNCTION CHECKED SERVICEABLE.