"The fact that you're saying that means it's worse." Underneath the flat disbelief, there's a note of distress. In a place that didn't have weird shit happening every other month, he'd count it as just an ordinary cold (which would be Unpleasant but manageable). But after a year and a half in this place, Levi's learned to not assume anything to be ordinary at first blush.

And yes, blood and petals would definitely be worse.

"When did it start? You sounded fine this morning."

Unless Erwin had successfully hidden his off feeling from him early on...