Swamped

"Pardon me..." you start to say.

"Because I overheard someone talking about gassing the hospital," the wizard interjects, before you can add on to that. His voice sounds a little weak. "That's why. I'm afraid I don't know who, what they're planning to use, or why, because they got away from me."

"So, the sewer access should probably be blocked up too, then," you say. "Was just coming here to check on that. And on what to do about the key for the emergency exit. Someone's watching it right now, but that's probably not going to do much good against gas."

"Evan should be getting the key by now, so no need to worry about that," the doctor says. "You're right about the sewer access, though. It should be safe to block off the latrines temporarily - we've got enough chamber pots for everyone, though it will make it harder to clean them. But hopefully we shouldn't have to worry about that by dawn."

"Where are they?"

The doctor points off in a direction.

"Three separate ones, all right next to one another. Perhaps you can shove matresses from spare beds over the holes. We're not going to be in much of a position to take new patients until this is dealt with, after all."

"Hold on one minute!" says the patient with the chest wounds. "Can't we get masks or something? I don't like bein' a sitting mallow here!"

"We don't have masks with good enough filters to protect against a gas attack, I'm afraid," says the doctor.

Well, now that he mentions it, you've got one. Though you aren't sure if you want to publicize that fact. You decide to worry about it after dealing with the latrines, so you head over there.

And immediately run into a new problem.