Blow out the candle and ditch the aerosol can. Kohler Co. has introduced a deodorizing toilet seat that it says eliminates embarrassing bathroom odors and the need for candles and sprays to cover them up. A fan hidden in the battery-operated seat sucks in air and pushes it through an odor-eating carbon filter, followed by an optional scent pack. Product manager Jerry Bougher said the idea is to attack smells “where the action is.” The $90 seat is one of many high-tech gadgets that Wisconsin-based Kohler and its competitors have introduced in recent years to make time spent in the...