As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2901 THE CREW REPORTED SMOKE SMELL FROM THE RECIRC FANS. THE AIRCRAFT LANDED AT IAH UNEVENTFULLY WHERE MAINTENANCE INSPECTED THE AIRCRAFT, OPS CHECKED THE RECIRC FANS ALL WITH NO DEFECTS NOTED, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.