Try wiping the couch every day with baby wipes (conditions the leather too) for about a week or so. You should begin seeing and smelling a difference. Some of the smells may be UNDER the leather in the stuffing. Flip the couch and spray Febreeze from underneath periodically, or even set it outside in the fresh air and sun (upside down) for a few days. Finally with stubborn stains, try moistening the stains then putting baking soda on the spot and let set overnight, or try k2r or k12 dry cleaning spot remover, but rub with a soft cloth, not the scratchy bristles. ... View related article.