I never would have believed that this would work, but here is a super-simple way to get the onion (or other strong odor) out of your hands when you are cooking!
1) wash your hands with soap and water
2) pour the left over coffee from breakfast over your hands and “wash” them in it (make sure the coffee has cooled!)
3) rinse your hands with clear water
Yes, it works! If you don’t like the remaining smell of coffee, you can follow up with another soap and water wash.
Give it a try!