ATMOS

The word ATMOS was a on a widscreen label of a Taxi. (DW: Partners in Crime). Atmos devices are used in the plans of the Sontarans. (DW: The Sontaran Strategem/The Poison Sky)

Behind The Scenes
ATMOS is a major plot element of The Sontaran Strategem/The Poison Sky.

other terms a device fitted to Automobiles to reduce co2 emissions at was used by the Sontarans as a weapon against mankind