Oregon Revised Statutes Public Health and Safety § 433.840

The people of Oregon find that because exposure to secondhand smoke, certain exhaled small particulate matter or other exhaled toxins is known to cause cancer and other chronic diseases such as heart disease, asthma and bronchitis, it is necessary to reduce exposure to such smoke, matter or toxins by prohibiting the smoking, aerosolizing or vaporizing of inhalants in all public places and places of employment.