When feeling a nasty fart coming on, move into a group of people in order to share it's sweet fragrance. Then, briskly walk away leaving said group to argue amongst themselves as to who committed the deed.
Poop and Swoop a.k.a. The Fart Bandit
Stacey: "Oh my God! Do you smell that?! Rob! What the hell?!"
Rob: "It wasn't me! That had to have been Jesse."
Jesse: "No way, dude."
Monica: "I think someone just poop and swooped us."