ATTENTION, NOBEL PRIZE JUDGES
Scentee, which is made by a Japanese company with the same name, plugs into your phone and releases a chosen scent when you get a notification. That means that every time someone comments on your Facebook post or sends you an email, you could get a whiff of lavender or coconut or coffee.
(Thanks to Ken Fineberg, who says: "Eew what's that smell? Oh it's the boss calling.")