Pregnant women should stay inside and near filtered air. I happened to be working this morning on some segments for my radio show when I heard a doctor on TV talking about the dangers of wildfire smoke. Wildfire smoke now accounts for two-thirds of the days every year when we have dangerous air quality, and is similar to breathing in exhaust fumes. More Fires Create a Bigger ThreatExposure to wildfire smoke in our part of the country doubled over the period of the study! Pregnant women would benefit by exercising indoors and avoiding work that keeps them outside.