As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED SMOKE IN THE LAVATORY MESSAGE APPEARED AFTER ROTATION. F/A SMELLED ELECTRICAL AND CREW PULLED BREAKER FOR THE AFT LAVATORY EXHAUST FAN, CBP1 B8 AND WITHIN 10 SECONDS MESSAGE AND ODOR WENT AWAY. OUTSTATION MAINTENANCE HAS CONFIRMED IT IS THE AFT LAVATORY EXHAUST FAN.