As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD FLT 2625 EN-ROUTE MIA - IAD. THE AIRCRAFT WAS GROUNDED. F/A REPORTED SMELL OF PROPANE IN AFT PART OF CABIN, TURNED OFF RT RECIRC FAN, FA REPORTED SMELL DISSIPATED IMMEDIATELY. MAINTENANCE REMOVED AND REPLACED RT /LT RECIRC FAN FILTERS PER AMM 21-25-01 AND RT RECIRC FAN PER AMM 21-25-02 OPS CK GOOD.