As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT - ESTIMATE 1000 FT - LOAD MASTER REPORTED TOXIC FUMES COMING FROM NR 2 POSITION CONTAINER. DECLARED EMERGENCY - RETURNED KIAD. FOUND FUMES COMING FROM FREIGHT GENERATOR IN POSITION 2. GENERATOR REMOVED FROM AIRCRAFT. NO FUMES NOTED. AIRCRAFT OK FOR CONTINUED SERVICE.