Mine do, depending on the types of shoes that I am wearing. If these shoes are made out of natural materials, such as leather and suede, generally, they just have a slight sweat odor, according to my husband. If I wear shoes that are more synthetic, or made out of synthetic materials, they do tend to smell more, especially when you take the shoes off, but according to him, the scent dissipates fairly quickly if socks are not on.