As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ODOR IN CABIN, RTFL. RT RECIRCULATION FAN SHOULD BE REPLACED. REPLACED RT RECIRCULATION FAN, OPS CHECKS OK. REPLACED RT CHECK VALVE LT, OK. REPLACED BOTH FILTERS. RT RECIRCULATION FAN AIR FILTER EXHIBITED SIGNS OF FAILURE WHEN REPLACED. CHECKED THE DUCTING AND MIX MANIFOLD. FOUND LT AIR CHECK VALVE INOP. REPLACED VALVE. RT CHECK VALVE OK.