"I'd rather have you tell me now as opposed to finding out on your deathbed." Part of Venom might be a little angry for not being told sooner, but they haven't really spoken much since the party a year?? ago.

He wonders if working in the vents caused Thane to get sick, but then Thane mentions it wasn't unexpected. Had he been sick this whole time? "If there's anything I can do..."