In the late 19th century, life along the shore of Brooklyn’s fetid Gowanus Canal was the stuff of nightmares. The stench emanating from the 1.8-mile-long slash of stagnant water was awful enough to penetrate people’s dreams. Take Stephen Mooney. In 1889, the unwelcome smell shook him from sleep, and compelled him to shut his window and air his grievances. Mooney—a secretary of a local railroad—was one of several people eager to complain about life next to the muck. The Gowanus Canal Commission, convened by the local health commissioner and an…