Photo via Shutterstock When the gales blow across the Windy City, residents may have more to worry about than mussed hair. According to a new study led by Keri Hornbuckle from the University of Iowa, chemicals found in a myriad of personal care products are polluting Chicago’s air. Known as cyclic siloxanes, these compounds have been found to be toxic in aquatic life as well as posing a possible threat to other organisms.