As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AT 10,000 FT DURING APU START UP FUMES DETECTED IN THE CABIN AND COCKPIT APU WAS SHUT DOWN AND SMOKE AND FUMES PROCEDURES WERE FOLLOWED AND THE FLIGHT LANDED SAFELY. EMERGENCY DECLARED. FLTS 4575, 4710 CX. AUXILIARY POWER UNIT APU - INTAKE DOOR DEACTIVATED CLOSED.