I had an idea for a place that would buy stolen goods to take them off your hands. Anybody could buy them (after they cool off, obviously). But, if someone came in with a scent corresponding to the same settlement an item came from (or perhaps the scent of the same item, or same container), they could come in and take the item for free. To stop break-ins to recover goods, of course.
So yeah what do you think, should scents for specific areas/items be used for trading?