The Zielonka Shoe Smellkiller $16.95. [Via Bi-Rivets]

‘The specially alloyed Zielonka high-grade stainless steel neutralizes all odors in your shoes, without using any synthetic fragrances or chemicals…No more embarrassing moments when you take your shoes off…Smellkillers are made out of a special high-grade stainless steel. As soon as they come into contact with air and water they act like a catalyst that neutralizes all odors – just like the catalytic converter that reduces harmful emissions from your car�s exhaust. ‘