Don't know what a "wardrobe" smell is, but try airing it out on a sunny day. I heard cold air also removes smells. So perhaps you can try to put it into a ziplock bag and then into the refrigerator for a few hours to see if it helps. Not the freezer. That may be too cold for the canvas. But since people around here carry their canvas LVs all through winter with no problems, the fridge shouldn't be a problem either as it is over 32 degrees fahrenheit.