Mr. Crypt seems to have a BO problem that's causing Gemini some discomfort, so she decides to give him a odoriferous dose of his own medicine,courtesy of her ass.. She farts on him twice (one silent) and she makes sure her ass is tightly sealed in order to trap the bountiful stench in as she's sitting full weight on his face. You can tell the smell is harsh by the way he reacts with abject disgust as the "gas" makes it's way down to his lungs.