Regardless of inconvenience I would suggest you remove this appliance from use immediately until a professional tech can diagnose the smoke source... The possibility of a house fire may exist... It happened recently in my area (Alaska)... The fire chief traced the fire trail to the fridge (freezer area - side by side)... His words were, "It looked like fire poured out of the freezer"...
This was a Whirlpool and the homeowner said the company sent someone to pickup the fridge and take it back to the factory...
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