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The real inventive purpose of some of the things

In our daily life, we use many things which were not invented for this purpose. They were made for some other purpose and even some of the people know this fact. Still, we use these things for some other purposes. I am sure most of the people do not know about the reality of these things but some of us do know. Listerine was invented to use as an antiseptic but know it is used everywhere on the body. There are more other things like this in this video.