Fumifugium

The Fumifugium were a species that lived and thrived in smoke. They worsened the Great Smog of London but were defeated by the Tenth Doctor, Donna Noble, Ivy Clark, Terry Hopkins and Richard Cooper in 1952. (AUDIO: The Creeping Death)

The Tenth Doctor, Donna and Ivy Clark amidst the Great Smog of London. (AUDIO: The Creeping Death)

In the 1950s, Norton Folgate of Torchwood One was aware of the "living smog" and wished to investigate. His boss, Lizbeth Hayhoe was put off investigate due to the reports of the Tenth Doctor and Donna Noble's defeat of the Fumifugium. (AUDIO: Parasite)

Behind the scenes

• The name of the species is taken from the book Fumifugium, which studied the effect of air pollution and smog on civilisation, published in London 1661.