A professor at Harvard has invented what he calls the oPhone. It's a device that allows you to text message a scent along with a photo. You can mix-and-match 32 basic scents to create more than 300,000 unique aromas, according to the oPhone website. (It's called an "oPhone" because your sense of smell is called the olfactory sense).
You'll need small device that plugs into your phone, and then an app allows you to create custom smells to send to your friends.
An Indiegogo campaign looking to raise $150,000 for the oPhone launches on June 17. You'll be able to preorder a pair of oPhones (what good is just one?) for $149 until its official launch in early 2015, after which it will cost $199.