Why shouldnt you refrigerate onions?

Online Answer
Here's why: When an onion is chilled, the cold, humid temperatures in a refrigerator convert the starch to sugars (the same happens with potatoes), and onions tend to become soft or soggy a lot faster. Plus, as you probably already know, they also skunk up your fridge and make everything smell or taste like onions.
Related Questions 📌
Kept in the dark: Davison says your potatoes should be stored inside a paper bag in a cool, dark, dry place. And as mentioned above, away from onions and their sprout-encouraging gases.
There are many ways of using garlic.
Keep them in the dark: Potatoes and onions are best stored in the dark in a cool place (separately of course).
Onions contain antioxidants and compounds that fight inflammation, decrease triglycerides and reduce cholesterol levels — all of which may lower heart disease risk. Their potent anti-inflammatory properties may also help reduce high blood pressure and protect against blood clots.
While the fridge isn't ideal for storing onions, it will extend the shelf life of whole, raw onions beyond a week at room temperature. Onions absorb moisture very easily however, so their texture may get somewhat soft in the fridge. Whole, raw onions can last in the fridge for up to two weeks.