This guy was too nosy for mistress Dula and her friends to let it slide. They had to dominate him and they chose to use their sniff my socks fetish to do it. He had to learn that it was wrong to be nosy and he had to stop it forthwith. He had no choice but to do what the mistresses asked him to do. He tried to get them to stop but they did not.
Mistress Dula wanted to make this slave know that she was not his equal and that he was supposed to obey her at all times and that is what happened. The mistress did not care about anything other than humiliating and teaching him a lesson and that is exactly what happened to him. Besides being put in a tiny cage, he was also forced to lick and smell her stinky socks.