Review of Morso Squirrel Convector 1442 stove
Morso Squirrel
You cannot let this burn overnight because it will not produce enough heat to burn off the smoke. Very nice little stove with plenty of heat. Not sure how effective it is at being smokeless though!
Stove expert replied: in order to minimise smoke you should run your stove relatively hard, and should definitely not try to turn it down for the night.