9. The warden of a house of detention may permit smoking in all the rooms used for detention within the meaning of the Act respecting correctional services (chapter S‐4.01) except cafeterias, classrooms and meeting rooms, gymnasiums, rooms used for worship and libraries. Furthermore, the warden may permit smoking in rooms situated in a court house and used for detention. The warden of a house of detention is an operator within the meaning of the third paragraph of section 3.