As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 393 - DURING FLIGHT CREW REPORTED CHEMICAL ODOR IN LAVATORY AND CABIN. ACCOMPLISHED PACK BURNOUT RAN ALL THREE ENGINES. SERVICED AND CLEANED ALL THREE LAVATORIES. UNABLE TO DUPLICATE SMOKE OR ODOR. SYSTEM GROUND CHECK NORMAL OPERATION. (M)