Ding dong, no pong

Does the aroma of your demon curries, garlicky cooking or flatulent pets put visitors off when they come to your front door? Derry Cox of Derbyshire has a simple solution: incorporate an air-freshener in your doorbell. When a visitor rings the bell, the solenoid that moves the bell hammer also presses a plunger onto the aerosol valve of a can of air-freshener. By the time you’ve answered the door, your hallway is fragrant.