The air we breathe matters and often we do not have control over what is in it. For many, the Spring season brings beautiful flowers and a most welcome warming of temperatures, as well as spending more time outside. It also marks the explosion of pollen, which can irritate both those with allergies and people with asthma. Being outside to engage in outdoor activities also means we are exposed to any air pollution that may be present. Pregnancy is a sensitive time for both the parent and the …