Sometimes, when people say their feet, or socks, are dirty or sweaty you have to take their word for it. Or, maybe have a look or sn*ff and do not feel the same way.
That is certainly not the case here, you can see just how the sweat has stained Temptress Nightshade's socks as she removes her trainers.
Taking a sn*ff, the sub j*rks back, visibly shocked at the smell.

When the sub goes to take the socks off, he is stopped. No, he's not getting to feet. He has to take sn*ffs of the extremely sweaty socks.

She lays him down; he visibly struggles as she places her sweaty socks on his face.

"You'll learn to love them," she laughs.

You'd be forgiven for feeling this was a step too far and that he wanted this to be over, if not only going through this to avoid displeasing his Mistress.

Whilst struggling, Temptress tells him, "I'm going to get you to a point where you beg for my socks to be like this. You will love them"

She starts teasing his c*ck with her sweaty socks. A footjob in filthy, sweaty, socks.
He likes that!
Mind, it feels like he'll say anything for an *rgasm, as she rubs the shaft.

She tells him he will *rgasm to her sweaty socks. She teases and edges the c*ck with her socks. No lube, only the sweat from her socks as any form of comfort.

As he asks to c*m, she says yes, but only if it's onto her sweaty socks.
Of course he takes the deal and the release.

And now the socks come off... gagged with the filthy, sweaty, c*m filled socks. Teased in his mouth as he recovers from the intense *rgasm.

The conditioning is well underway in this intense, sockjob, clip.

Even at the end when her sock is removed, you can see how dirty and sweaty her feet are.

Fußfetisch Abspritzen Schweiß Fetisch Conditioned to C*m to Sweaty Socks mit C4s.com