Mold spores are found everywhere in the natural environment. Outdoors, the concentration is usually so low that your body can easily fight them off. Indoors, however, the risk increases significantly as soon as mold colonies take hold: spores and metabolic byproducts then accumulate and pollute the indoor air.
Many people react to mold with allergies, skin irritations, or respiratory problems. In severe cases, mold can also trigger asthma attacks. If severe symptoms persist or the infestation spreads, seek medical advice and have the source professionally removed.