As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LAVATORY FIRE AND SMOKE MASTER WARNING FOLLOWED BY AN ODOR. EMERGENCY DECLARED, LANDED SAFELY. EMERGENCY SERVICES CHECKED OUT THE ACFT ON GROUND, NO SMOKE DETECTED. PERFORMED AN OPS CHECK OF THE AFT LAVATORY SMOKE DETECTOR IAW AMM 26-17-00. OPS CHECKED GOOD. ISOLATED CABIN ODOR TO DEICING FLUID IAW TSM 05-50-00-810-831. PERFORMED DECONTAMINATION OF ECS ON APU 2 ENGINES IAW AMM 21-00-00-615-004A AND AMM 21-00-00-615-002. OPS CHECKED GOOD.