Saw this at an estate sale by the kitchen sink. It looks like a bar of soap but it’s made of solid metal and has no smell.

or rectangular, with smooth, polished surfaces free from engravings or decorations.
Unlike other metal items, they are designed to be held comfortably in the hand and are usually lightweight. If you’re unsure whether a metal item is an odor remover bar, try using it under running water with an odorous substance to test its effectiveness.
10. Modern Alternatives and DIY Substitutes Using Regular Steel 
While stainless steel odor remover bars are a convenient option, there are modern alternatives and DIY methods for neutralizing odors. Some people use regular stainless steel