Are you disappointed when you stop noticing your plug-in?Er… no. Surely 'disappointment' is a form of noticing? And we'll pass over the deliberate implication that we all have 'plug-ins', and the concomitant implication that without an electrically-powered chemical-release system, our houses would revert to the conditions prevalent during the Black Death.
My house smells of paperbacks and vinyl records, overlaid with top notes of sweaty sports equipment, fresh ironing and of course bitterness. I intend to bottle it for the Christmas market. I've got a slogan too: 'Splash on some Plash!'.