People, despite getting teary-eyed, enjoy the numerous culinary uses of the onion. The gas containing vegetable is both a primary ingredient and a flavor enhancer in many dishes. If you think its list of uses end at the kitchen, you better think again. It is proven to be a medicinal wonder, as well as a metal polisher and an insect repellent. With its number of alternative uses, the onion may induce tears of joy to any DIY pundit. Here are seven of its tearfully - pleasing uses.