This scoping review explores the effectiveness of face masks as personal interventions against air pollution for pedestrians and bicyclists. Findings suggest that face mask use can improve health outcomes for individuals commuting in polluted urban areas. Disposable N95 respirators were identified as the most effective, followed by surgical masks and cloth masks with exhalation vents. Public perceptions of face masks against air pollution were generally positive. While the evidence reviewed is limited, it consistently supports the notion that mask use could be an effective and affordable strategy for reducing air pollution exposure. Public health organizations are encouraged to promote continued mask use as a personal intervention, particularly during the post-pandemic period.
