“I don’t think we’re breathing sewage,” Sarah retorted, without looking back. She wasn’t the only one whose biology had been rearranged. The less she saw, the better. “Whatever this is, it’s deliberate. There’s a system in place for biosleeves like ours to travel down here. Think about how complicated this transformation had to be. Why the hell would you go to all the trouble to design that, then put it into the intake for a death-machine? Waste of resources.”