The slave suffered from 3 layers of hoods: the inner latex hood, the StudioGum mask with gag and nose tube, and the Russian gas mask. Because of the nose tube, he couldn't smell when the popper rushed in and could only feel the light-headed effect passively.
On top of that, he couldn't move an inch, couldn't hear anything with the white noise from the headset, couldn't breath easily because of the bubble bottle, and couldn't do anything about the electro pain on his cock. 😈