The fun you can have with just a plastic bag.
Foxtress places the bag over the subs head so that she can have a little fun.

She is going to place her feet in the bag - and tighten it up. Her feet are already sweaty, but the heat this is generating is creating a sauna of sweat inside the bag.

Her feet pour sweat onto the subs face and into the air as he is literally left breathing her scent.

Fun with both breath control and feet - as the sub is left in just a haze of sweat.