This prototype is a design project I made, and it is meant to detect smell. The second picture shows the front of the prototype and as you could see, I made it into the shape of a spiral shell. On the back of the prototype, as the third picture shows, includes element of a smell detector, such as a screen, buttons, and a place where the batteries goes. so, when you press the detect button, the smell will go through the tip of the shell and the result will appear on the screen.