As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS VENT BLOWER CAUTION ON ECAM. BLOWER CEASED AND RELEASED STRONG ODOR INTO COCKPIT. PILOTS LANDED WITH MASKS ON FOLLOWED ALL ECAM/QRH PROCEDURES AND DECLARED AN EMERGENCY. MAINTENANCE FOUND VENT EXTRACTION FAN FAILED. REPLACED THE EXTRACTION FAN IAW MM 21-26-51. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECKED IAW AMM 05-96-84. AIRCRAFT WAS GROUNDED.