you can still smell it and touch it. you just can't see it.
it wasn't my idea. but, the swiss generally never serve rotten food. maybe dried food? ok. kids would love it. they could actually test out their 'light up' shoes. why do they sell light up shoes to kids anyways - since they're not supposed to be out after dark. maybe this would give them a place to walk around and feel important by leading their parents by the hand.