Inspired by the great performer Le Pétomane:
He was famous for his remarkable control of the abdominal muscles. Le Petomane was the stage name of the French flatulist (professional farter) and entertainer Joseph Pujol. Some of the highlights of his stage act involved sound effects of cannon fire and thunderstorms. www.ljhelms.com
... and smoke bombs
... these art fart panties bring you the superpups. An exchangable cartridge hovering behind the posterior contains color pigment which atomizes to a colorful cloud when gases are released.