Secondhand hookah smoke: an occupational hazard for hookah bar employees.

Background: Despite the increasing popularity of hookah bars, there is a lack of research assessing the health effects of hookah smoke among employees. This study investigated indoor air quality in hookah bars and the health effects of secondhand hookah smoke on hookah bar workers.

Methods: Air samples were collected during the work shift of 10 workers in hookah bars in New York City (NYC).