The 'Duofresh' device developed be Geberit is developed to clean bad air in bathroom settings, using a method that recycles the air rather than using chemically harmful sprays. The DuoFresh system saves energy and captures bad odors within the actual ceramic WC device where it goes through a purifying process to be re-released into what would be a cleaner atmosphere.
It brings a spa-like ambiance into the comfort of one's own home, drawing inspiration from the function of saunas and luxurious steam pools. Unlike most bathroom sprays, it purifies the air in the space rather than mask it with a stronger scent. It is initiated using a carbon filter that hides behind the bathroom walls -- this needs to be replaced once a year.