With a death toll of about 4,000 people in the U.S. alone, swine flu is a clear and present danger – and it could be lurking in a human body near you! But what if you could easily identify, and politely steer clear of, anyone who may be a potential carrier? These rainbow-colored face masks may help you do just that. They’re printed with thermochromic ink that changes color when the temperature of wearer’s breath increases. True, this smart wearable technology could lead to a very lonely corner on the subway for anyone suffering from a fever, but it would certainly help to curb the spread of deadly germs in a simple (and pretty) manner. Plus it’s a pretty effective way for you to get your boss to tell you to go home.