It's more that hiss than her words specifically, but either way, a jolt of deeply unpleasant alarm rides right up his spine. He had been feeling lax after exercise, but lax in that tingly way that brings a certain energized edge to anything; now the lax is gone and he feels primed to flee whether he wants that priming or not.

"The... oh." It sinks in, but he's never met a vegetarian full of quite that level of vitriol. The way she phrases that... had she called him a carnivore just then? "You don't eat meat?" He sounds more surprised than he means to, every reaction electrified by this incredibly uncomfortable conversation.