Many epidemiological data support the association between ambient air pollution and all-cause mortality and morbidity, mainly from respiratory and cardiovascular diseases, particularly in the elderly, infants, pregnant women and people with comorbidities. In addition, air pollution has been related to higher risks for lung cancer and allergic diseases. The World Health Organization (WHO) estimated that in the year 2012 ambient air pollution was responsible for 3.7 million annual deaths, representing 6.7% of all-cause deaths and tripling the 2008 estimates [1]. (Source: The American Journal of Medicine)