"'How would you describe your condition?" I asked. Isabel didn't respond. Instead, her eyes landed on a wasp, possibly the same one that had been buzzing in my ear earlier. Isabel turned her chin slightly in its direction. She blew out as if extinguishing a candle flame. For a split-second the wasp hovered in the air. Then it dropped dead to the ground."
The user is able to generate and manipulate poison within them in a way that allows them to shape the exhaling of the effect. These shapes can include bursts, streams, spheres, even a mist of it from the mouth.