https://phys.org/news/2018-06-health-effect-air-pollution-traffic.html

Malmö, Sweden, with a population of 320000, generally stays below the recommended EU threshold for small particles and nitrogen oxides annually. Despite this, the health benefits of removing exhaust fumes from the city would be significant.

"Decreased pollution would prevent 55–93 premature deaths (2–4% of all cases) each year, 21 new cases of childhood asthma (6% of all cases), 95 cases of childhood bronchitis (10% of all cases), 30 hospitalisations for respiratory diseases, 87 dementia cases (4% of all cases) and 11 cases of pregnant women with preeclampsia (11% of all cases)", explains Ebba Malmqvist, researcher at the Department of Occupational and Environmental Medicine at Lund University.