Abstract: A room air freshener in the form of a porous ceramic ring in combination with an uprightly positioned light bulb. The ring includes a liquid premeasuring cavity so that a fragrance-generating liquid filling the cavity will be completely absorbed by the ceramic ring. When the liquid filling the cavity is entirely absorbed by the ring, the ring may be placed on a light bulb for vaporization of the absorbed liquid and without risk of spillage regardless of the attitude or levelness of the ring on the bulb. When the lamp bulb is turned on, the ring is heated to vaporize the liquid and release the fragrance which permeates the room.