Imagine if you could not only post pictures of your meals on Instagram but post their odors as well? That seems to the premise that some Harvard students are working on as they try to develop a method of sending out smells over smartphones. The students are working under the direction of Paris-based facility Le Laboratoire to create a new smartphone accessory that “will permit us to send olfactory messages instantaneously and around the world” just as easily as we send out text and voice messages.