As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YUL/BTV---CO3213, ENROUTE CLIMB FROM YUL CREW REPORTED, LAV SMOKE WARNING THROUGH 12000 FEET, DECLARED EMERGENCY AND DIVERTED TO BTV, LAV SMOKE QRH COMPLETED. AIRCRAFT LANDED UNEVENTFULLY. MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE IAW TASK CARD 6271001 REFERENCE M-602 538434 OPS. AND LEAK CHECKS GOOD. NO LAV SMOKE OR WARNINGS NOTED. AIRCRAFT RETURNED TO SERVICE.