Westjet B737 near Winnipeg on Mar 21st 2014, smoke in cabin

A Westjet Boeing 737-700, registration C-GRWS performing flight WS-655 from Toronto,ON to Calgary,AB (Canada) with 109 passengers and 5 crew, was enroute at FL380 near Winnipeg,MB (Canada) when the crew reported a burning odour and smoke in the cabin. The crew shut down the cabin utility power after which smoke and odour subsided. The crew continued the flight to Calgary for a safe landing.

The Canadian TSB reported a recirculation fan was reported failed.