Tobacco

Tobacco was a smokeable substance, often from a pipe, that was a cause of cancer.

History
In 100,000 BC, the First Doctor smoked tobacco from a pipe. (TV: "The Cave of Skulls")

In the 17th century, Samuel Pike's smuggling ring often imported and exported tobacco. (TV: The Smugglers)

Before her crash on 17 July 1888, a tobacco pot was present on the steamer Elysium. (PROSE: The Elysium)

In 1892, the Fourth Doctor told George Litefoot that there was no tobacco where Leela came from when she did not recognise what a smoking pipe was. Litefoot concluded it sounded healthy but exceedingly dull. (TV: The Talons of Weng-Chiang)

In 1963, Susan Foreman believed the Coal Hill Staff Common Room stank of rotten tobacco. (PROSE: Time and Relative)

In 1974, the Brigadier was conscious of the fact that smoking tobacco was a major cause of lung cancer, and as a result discouraged his subordinates from smoking. (PROSE: Doctor Who and the Green Death)

In 2007, London, it was illegal to sell tobacco to anyone under sixteen. (TV: Love & Monsters)

In the 2000s, cigarette boxes advertised that "SMOKING IS BAD." (TV: Out of Time)

By 2016, at least in London, it was illegal to sell tobacco products to those under the age of 18. (TV: For Tonight We Might Die)

Tobacco became rare in the aftermath of the 22nd century Dalek invasion. (PROSE: Legacy of the Daleks)