The Smell-o-Phone has joined the march of progress.

A new scent app for the iPhone has been developed that raises a lot of fresh, and maybe not-so-fresh, questions: Like, how many of the "hundreds of odour signals" in this app will actually be bad ones? Why the hell would you need to smell something during a conversation anyway -- especially if it's a pre-packaged smell? Why are we spending money, time, and technology on smell-o-phones when we'll obviously be communicating through chips in our brains and ESP in, oh, 10 years anyway?

What we at Light Reading, however, really, really want to know is: What will the smells be?

So here's what we're betting some of those olfactory blasts might be (click on the image below to launch slide show):

Figure 1: Bakery Know someone who’s having a bad day? Send them a burst of doughnuts or a blast of coffee cake. Nothing says, “Cheer up, buddy!” like the sweet, sweet smell of gluten-filled calories.