Proximity to traffic is associated with worse symptom severity in patients with chronic rhinosinusitis with nasal polyps

Increasing traffic proximity, suggestive of exposure to higher levels of pollution, was significantly associated with increased severity of CRSwNP. These findings suggest that pollutant exposure should be considered in CRS assessment and management. Future prospective studies on the association of traffic related air pollution and how pollutants affect symptom severity, may help to better elucidate the role the environment has in CRS.