Don't know what that is. [His voice is hoarse, but the response still comes out dry. "Seizure" sounds like some sort of slang, so he doesn't even know what to think about the assumption.

He lets out a long breath, some of the tension in his shoulders letting up when he feels Tony's grip loosen.]

...Takes a lot more than running over me to kill me. Don't fret about stupid things over a day stranger.