Cold smoking takes a few days, to a week to properly smoke food. The heat source which creates the smoke is far from the food, so it does not cook. This is the difference between hot smoking on a grill, which cooks the food with a light smoke flavour.
Must find plans to make this! -- The reshaping wood pallet ideas with the storage option are the best because they help in avoiding the mess in a room, this idea is a combination as it serves as a couch on wheels as well as allows storing the items.