threfty
A rich smelling fart that engulfs the air around it and sucks all oxygen out of it. Upon entering your nostrils the smell is so pungent it causes a gag reflex to begin, but the lack of oxygen throttles the gag and provokes an involuntary cough, forcing you to breathe in more of said fart.
Be warned; the bigger the threfty fart the more likely you’ll need oxygen therapy and counselling.