"Yeaaaah, I don't know about the plague or the pox, but the Malaria? It's epidemic. You go five miles out of town, and it's swamp that eats people alive." Well, it's not as bad as all that, just avoid stepping in any unsightly piles on the street. "Seriously, why did Mohenjudaru have sewers almost 6000 years before London did? It's not like pipes are a lost technology."

Point of order, they're in Westminster right now, not the City of London. But that's a distinction best explained by fast-talking men on Youtube.