Next time you've indulged in a plate of fresh crab or have just finished finely chopping fresh garlic and onion for your latest culinary masterpiece, grab a stainless steel utensil.*
Why? Because rubbing your hands over stainless steel will help remove the lingering odor these items often leave behind. You may need to apply the method more than once if the odor is particularly strong. And of course, be sure to wash your hands with warm water and soap afterwards!
*If you have a stainless steel sink, it will work as well, or you can purchase a stainless steel "soap bar"...though most of us have plenty of stainless steel in our kitchens already.