Ant Stink Bugs are enemies in the Skip and Sqak Series. They are Ants wearing rubber suits and gas masks and carry a toxic spray gun that poisons you. They need 2 hits to defeat them.
The Stink Bug can spray a toxic goo that poisons you and can knock you back with their gun if you get too close. Before they die, they explode into poisonous gas so back away before they explode. They don't run that fast either.