The smell of a rogue fart in an elevator is unbearable! Luckily this app and robot combination can help you find the culprit. Taking the popular science prize in China, this technology detects air dynamics to figure out who cut the cheese.

In student Ji-Gong Li's paper, he explains the specific workings behind it. "When the odour plume clue is found, the robot performs an exploratory behaviour, such as a plume-tracing strategy, to collect more information about the previously unknown odour source." Basically, when a cheek squeaker is identified, the robot will spring into action and find the source. 

So what could be the future of this? National fart detectors? Could come in handy.