“…Moreover, the elderly demonstrated heightened sensitivity to particulate matter (PM 2.5 and PM 10 ), whereas adolescents and younger adults displayed increased susceptibility to the adverse effects of SO 2 , NO 2 , and O 3 (35). Even short-term exposure to various air pollutants including PM 2.5 , PM 10 , SO 2 , NO 2 , O 3 , and CO was significantly linked to an elevated risk of outpatient visits for allergic rhinitis (36)(37)(38).…”