Guillermo Del Toro said this quote

He paused in the hallway, sniffing the air. He scowled, sniffed some more. He pressed an intercom button on the wall. Betty, I distinctly smell sewage. Could you get a plumber out here ASAP? Several curly hairs fluttered in the air after he was gone. I clutched at the arm of the dentist chair. This isn't a joke, Tub! I'm in trouble. We're all in trouble, the whole town, the whole world! You have no clue. You have no idea what kind of things we're dealing with here. There's a whole land of --