I wonder what the ramifications of this device will be. I can imagine some people getting quite aggressive with it, demanding to scan the kitchen of their local restaurant. All that aside, how interesting that it uses exactly what we use, but in an electronic form. our nose!
Magnesium is the central element in chlorophyll and the basis of early life on the planet. (Which is a good thing when you consider all of the amazing things it does for us every day):