As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FUMES ENCOUNTERED AT FL 370. SOURCE NOT IDENTIFIED. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO TPA WHERE IT LANDED SAFELY. MAINTENANCE FOUND THE RIGHT HAND CABIN RECIRCULATION FAN CIRCUIT BREAKER TRIPPED AND THE FAN INOPERATIVE. REPLACED THE RIGHT HAND RECIRCULATION FAN AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 21-21-51.