A molds smell is also another strong indicator of a molds presence as many produce an earthy, musty smell. This smell if often the first sign of mold growth for many homeowners when mold is present in building materials.
Although many molds are harmful to health and building materials, not all molds are dangerous. In fact, some foods are created through the controlled growth of mold. Even penicillin, the most widely known antibiotic on Earth, is obtained from a specific type of mold. Being a key ingredient in penicillin, it is arguable that we can attribute our very existence to mold.
Other molds produce hazardous materials that can cause health problems such as respiratory failure. One such material is Mycotoxins which is a toxic substance that can result in headaches, migraines, rashes, tiredness, sinus problems, difficulty breathing and chronic cough to name a few.