Been there, done that, bought the t-shirt. Apocalyptic visions, Armageddon. Doomsday cults, mass suicides. The Mayan calendar. We endured the panic of the Millennium. We’ve seen the films, from “Dr. Strangelove” to “Melancholia”. We know the New Testament prophecies, we’ve heard about the End Times and the Rapture. But one question remains: how will it smell?