To get rid of onion, pepper or garlic smells from your hands, mix a ratio of two level tablespoons of baking soda to a glass of water and soak hands for 30 seconds to a minute. Also great for getting rid of these smells/burning from mouth (rinse, don't swallow!).
If that doesn't work just run water over your hands while holding a stainless steel spoon or other utensil in your fingers.
If that doesn't work just run water over your hands while holding a stainless steel spoon or other utensil in your fingers.