Limburger is a surface ripened cheese. Its powerful aroma comes from its rind. The surface bacteria release enzymes which breakdown/ripen the curd/cheese beneath the rind. The bacteria which colonise the rind are called Brevitium Linens, there are about 200 species of this bacteria. If you don't wash your feet regularly yes some of these bacteria may colonise between your toes. Hence the possibility of a similar smell, however sweaty feet carry many more noxious niffs than does the Limburger. Its unfortunate that this smear ripened cheese suffers the smear campaign of smelling like feet. You never hear of people describing a blue cheese as smelling like mouldy bread or of Parmesan tasting like calf vomit. Its not a proper way of contrasting your food. You need to try some, its delicious, it wouldn't be a delicacy if it tasted like feet!