One of my online foot slaves gets a pair of my sweaty socks - and to make them extra smelly I put some plastic bags over my feet for a whole day. In the evening I call for another slave and take the plastic bags and socks off in front of him. The socks are wet and sweat-soaked by then - ready to be packed and shipped to the online slave. But of course my bare feet are sweaty and stinky as well - so I make the slave lick them clean. As you can probably tell by his face the smell is extreme this time - but he has no chance - he has to smell and lick them!