As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL SMELL WHEN APU AIR WAS SELECTED ON AFTER ENGINE SHUT DOWN. FLIGHT ATTENDANTS REPORTED FEELING LIGHT-HEADED, SHAKY AND IRRITATED THROATS, AND SOUGHT MEDICAL TREATMENT. MAINTENANCE REMOVED AND REPLACED THE APU LOAD CONTROL VALVE IAW AIRBUS MAINTENANCE MANUAL 49-51-51. HONEYWELL CONFIRMED THE FAILURE DUE TO CRACKED DIAPHRAGM RETAINER.