What was found
YQX - FLT 0092 - AT FL 330 M 80 IN ICING WX WITH LEFT TURBINE ENGINE/WING ANTI-ICE ON, CREW SMELLED ELECTRIC SMOKE AND NOTICED SMOKE BEHIND CAPTAIN'S SEAT ACCOMPANIED BY SMOKE IN COCKPIT. CHECKLIST, SMOKE AND SMELL DISSIPATED. COCKPIT/AVIONICS COMPT CHECKED FOR ODOR, NONE FOUND. ALL SYSTEMS CHECKED FOR NORMAL OPERATION. EXTERIOR CHECKED FOR EVIDENCE OF STATIC DISCHARGE/LIGHTNING STRIKE, NO NSG, NO FAULTS FOUND. (X)