Picture "Windows" PLUS

The home's central air handling system should be modified to accommodate this Idea. At suitable locations on the walls, extra vents (SMALL vents!) are added. Then special picture frames are placed over the vents. The frames are sealed to the walls, and are designed to resemble windows that can be opened by, say, sliding half a pane. When the frame/"window" is closed, of course, these particular vents do not send air into the room (the vents should be mechanically closed in addition to the frame being closed, as explained below).

Special pictures are sold to go in these frames. Many sizes are possible, of course. As part of the overall printing/manufacturing process, they are soaked in appropriate scented oils, then sealed for the consumer. Upon being opened, a given picture is placed into one of the special wall frames, and sealed up again....

When the mood strikes, you select a picture. Say, a nice desert-island scene with palms. You open the "window", and the also-opened vent can now push a scented sea-air breeze into the room. Or, open a window to a still-life painting of flowers, and THEIR scents flow into the room. Or, a mountain scene "window" brings pine and other fresh scents. Lots of possibilities here, of course! (No, this idea is probably not suitable for a picture of the family dog!)

When you've had enough, you close the chosen "window". Being sealed between closed glass and closed vent will let scents last a long time, certainly for a worth-the-price number of openings in the future.