If you don't know if you stink, there is a new app that can help you.

Just when you thought there was an app for EVERYTHING, Nivea Men, in addition to making deodorant, is working on a smartphone cover and app that tells you when it's time to put on some of their product. Confused yet?

This is essentially a B.O. detector. Simply hold your phone up to your disgusting armpit and a censor will tell you if it's time to hit the shower before that big date or meeting. Or you could just put on some deodorant and save yourself the trouble.

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