The nanobots Alice to escalate the situation.

"You know, Jack..." Alice said slowly.

"If you like to smell mom's pantyhose so much, why don't you smell my feet?" She asked Jack confidently.

Jack looked his sister dead in the eye. It was one thing after another, and things were getting even more intimate once again.

"What?" Jack asked, making sure once again that he was hearing his sister correctly. Much of his horniness from earlier had subsided as he had some more time to think about the whole situation, but the question Alice just asked was just asking for more trouble.

"I mean, it's not like it's any different right? You were only using her nylons to masturbate, after all..." Alice replied. She looked right back at Jack as she said this.

Again, Jack was quite taken aback. But the nanobots knew exactly what he was thinking about and they were going to have their way with Jack's cock.

"Oh no..." was all that the real Alice could think of. She was enjoying the footrub, but now this...

Jack didn't reply this time. He couldn't. The shame was just too much. So Alice took control again.

While Jack had stopped rubbing Alice's feet completely, Alice quickly raised her left foot to rest against Jack's nose, squishing it slightly.

The nanobots knew exactly how Jack was going to react.

And he didn't. Rather than moving away from it, he let the aromatic pantyhose foot stay there upon his face. He was now smelling his sister's feet, which were encased in his mother's used pantyhose.

The nanobots, amused, actually caused Alice to giggle a little bit. They were predicting every single one of Jack's actions correctly. As Jack let his hands go of Alice's other foot, she brought the other one up as well, covering Jack's face entirely with Alice's feet.

Now the pungent smell of the pantyhose, combined with Alice's own foot smell, were penetrating Jack's sense of smell.

At first he was too shy to admit that he was enjoying it, but after a few whiffs he couldn't deny himself any longer.

He took deeper and deeper breaths of his sister's feet, and shamelessly grabbed both of them, shoving them even harder into his face. He couldn't get enough of it.

The real Alice didn't have anywhere to turn, nowhere to go. She couldn't turn her head and look away, she could only watch as a prisoner in her own body.

"Could it get any worse?" She thought.