As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O FLT ATTENDANT A/C LEFT MX HANGER. FUMES WERE NOT GETTING STRONGER BUT WERE MORE NOTICEABLE NEAR FLOOR. CONTINUED THROUGHOUT FLIGHT. ADVISED BY MAINT NOT TO START APU ON GROUND. REPLACED RT COALESCER BAG FOR T/S. PERFORMED PNEUMATIC HIGH PRESSURE BURNOUT PER MM.