As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH F/A'S REPORT ELECTRICAL SMOKE ODOR DURING PARKING, LAVATORY SMOKE DETECTOR AUDIO WAS HEARD. BOTH FAS REPORT A SMOKE, HAZE WAS NOTICED IN CABIN. FWD F/A SAW A DEFINITE HAZE IN THE CABIN. CONFIRMED SOURCE WAS THE NR 2 ENGINE. REPLACED NR 2 ENGINE IAW MAINTENANCE TASK CARDS 6710003 AND 6710004. RETURNED TO SERVICE.