Keep avocados from browning

Fresher avocados? We’re in! Today reported that placing a cut onion in the container with your sliced, or otherwise cut, avocado is their all-time favourite method for helping it stay greener longer. “Sulfur dioxide is a compound used to preserve fruits,” Today stated. “Sulfur is a component in onions, so it stood to reason it might work similarly. By far, the best of all methods, the avocado was nearly as green as when it was cut.”
Eliminate new paint smell

Your bedroom’s new shade of paint looks great, but the smell is keeping you up all night. What to do? Place half a cut onion in a dish on one side of the room, and the other half on the other side of the room. It will absorb the smell within a few hours.
Soothe a bee sting

If you have a nasty encounter with a bee at a barbeque, grab one of the onion slices intended for your burger and place it over the area where you got stung. It will soothe the pain. This trick doesn’t actually treat the sting, only the pain, so if you are severely allergic to bee or other insect stings, be sure to seek medical attention at once.