The release of excessive gas from the stomach or upper intestine (burping, belching) into ones own face mask.
Commonly a Hot Pocket carries warm, uncomfortably moist air. Results in the wafting taste and lingering smell of previously eaten or digested substances in the mask wearers face.
"What the hell did I eat!? I just laid down a Hot Pocket and I'm suffocating!
Antonym: Dutch Oven