No. The governing law here is chapter 70.160 RCW- Smoking in Public Places. The basic rule of that law is set out in RCW 70.160.030, which provides that "No person may smoke in a public place or any place of employment." A "public place" is defined by RCW 70.160.020 to mean "that portion of any building or vehicle used by and open to the public, regardless of whether the building or vehicle is owned in whole or in part by private persons or entities, the state of Washington, or other public entity, and regardless of whether a fee is charged for admission, and includes a presumptively reasonable minimum distance, as set forth in RCW 70.160.075, of twenty-five feet from entrances, exits, windows that open, and ventilation intakes that serve an enclosed area where smoking is prohibited." "Place of employment" means any area under the control of a public or private employer which employees are required to pass through during the course of employment, including, but not limited to: Entrances and exits to the places of employment, and including a presumptively reasonable minimum distance, as set forth in RCW 70.160.075, of twenty-five feet from entrances, exits, windows that open, and ventilation intakes that serve an enclosed area where smoking is prohibited; work areas; restrooms; conference and classrooms; break rooms and cafeterias; and other common areas.

The smoking ban applies to all office work environments.