Scent is, they say, the most primal and mysterious of senses. Nokia intends to patch into that biological imperative with this "Scentsory" cellphone concept.It's the weirdest design concept in a while, too, as the device can be opened to reveal interior planed walled with "pores," from which the scents emerge. Closed up, it appears to be svelte-looking clamshell; open, it looks like an origami hat.