There are 2 things that you need to deal with when it comes to foot odor, and that is bacteria and sweat. It is not actually the sweat that makes your feet smell, but the bacteria that thrives in the moist environment it creates. Sweat is actually odorless, for the most part, except for the kind that comes from the glands in the armpit/genital area. Sage has antibacterial, antiviral, and antifungal properties, and is also an astringent. Rosemary is antibacterial/antifungal, and is an astringent as well-which means that both help minimize the production of sweat from the sweat glands.