Mold in crawl spaces can significantly affect indoor air quality and pose health risks such as respiratory issues, allergies, and exacerbation of asthma symptoms. Mold can release spores into the air that, when inhaled, can lead to coughing, sneezing, and other respiratory problems. Homes with individuals who have compromised immune systems, children, or the elderly are particularly at risk. Timely intervention by professionals is crucial to prevent these health issues and maintain a safe living environment.