Mias feet were really sweating a lot today. And her slaves must understand that they are practically no longer needed for anything other than licking sweat from her feet. Slave girl letta is no exception. Mia orders letta to sniff her sweaty feet. The slave girl knows that it is better not to anger her Mistress and sniffs them faithfully. She also realizes that this isnt all and she has to lick all the sweat from Mias feet .. which actually she did a little later.