Pungent foods like onion and garlic like to leave their mark. They often result in a very savory, allium-y pair of hands, which I never minded, but some are deeply offended by. That seems to be driving force behind Rub Away, the stainless steel odor-absorbing bar.
Source: LifeHacker – Does This Metal Bar of ‘Soap’ De-Stink Garlicky Hands?