Indoor air quality in restaurants with and without designated smoking rooms

For that study , measurements of carbon dioxide and ultrafine particles were carried out in four restaurants located in 2 different cities in northwest Ohio. In each city, one restaurant was smoke free and the other one had a dedicated smoking room. A smoke free office space was assessed as a reference site. The results of the measurements show that C02 levels were elevated in all 4 restaurants with an inadequate fresh air supply. Significant differences were found between the two designated smoking rooms and the reference site : the mean level was up to 43 times higher in the dedicated smoking rooms than in the reference site.