Smoking

Aboard the SS Madame de Pompadour, smoking was done within smoking pods. (TV: The Girl in the Fireplace)

Behind the scenes
According to NOTVALID: How The Monk Got His Habit, which is not accepted as a valid source for in-universe articles on this wiki, the fifth incarnation of the renegade Time Lord who would become the Monk spent some time in the 1970s and developed a smoking habit which caused his voice to become gravelly.