As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERY STRONG ODOR, FUMES AFTER ENGINE START. APU BLEED USED FOR ENGINE START. R & R RECIRCULATING FILTERS IAW AMM 21-21-41. RAN BOTH ENGINES AND PERFORMED OPS CHECK OF BOTH PACKS IAW AMM 21-00-00. NO ODOR PRESENT AT THIS TIME. ACFT OK FOR CONTINUED SERVICE.