This tiny robot can crawl through your veins and control your brain treat your tumour. But I don't want to give it a chance.

"Researchers at the Israel Institute of Technology in Haifa have developed a miniature crawling robot, called ViRob, that can crawl through your lungs, find a tumor, and zap it with drugs. The bot, which is one millimeter long and four millimeters from end to end, can snake its way through the body, slipping into blood vessels and navigating through the respiratory and digestive systems
But thanks to tiny arms that help it grip vessel walls , ViRob is the first microbot that can tunnel between different body cavities. It's controlled by an electromagnetic field outside of the robot that creates a vibration that propels ViRob forward."
Imagine throwing this guys out while you sneeze, or pissing them out early in the morning...