As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER LANDING AND EXITING THE RUNWAY, THE FLIGHT CREW WERE ADVISED BY THE FLIGHT ATTENDANT THAT THE CABIN HAD FILLED WITH SMOKE. ATC CONTACTED AND EMERGENCY VEHICLE RESPONDED. THE SMOKE IN THE CABIN QUICKLY DISSIPATED AND ATC ADVISED. AFTER DISCUSSION WITH FLIGHT CREW SMOKE WAS INFACT INGESTED SMOKE FROM REVERSERS. THE CREW LEFT THE REVERSER WELL BELOW 60KTS LIMIT. (NO FURTHER ACTION REQUIRED).