The dangerous stink of the world's smelliest chemical

“It merely stinks. But it does so relentlessly and unbearably. It makes innocent downwind pedestrians stagger, clutch their stomachs, and flee in terror. It reeks to a degree that makes people suspect evil supernatural forces.”

That’s not hyperbole. In 1889, a factory in Freiberg, Germany attempted to make thioacetone. Their “success” produced “an offensive smell which spread rapidly over a great area of the town, causing fainting, vomiting and a panic evacuation.”