Fungi are everywhere! They will grow on almost anything that has sufficient moisture. Molds grow in warm, moist environments. Fungi produce spores in various shapes and sizes that are very light and can be spread by air currents inside or outside the house. Spores are the major source of allergens for individuals who are sensitive to fungi.

Fungi are common around the house and can be recognized as growth that occurs on spoiled fruit or old cheese in the refrigerator. Fungi may also appear on shower curtains, in shower stalls, on stored books and leather goods, in damp basements, in storage areas and in laundry rooms. Humidifiers and air conditioners have also been found to harbor significant quantities of mold spores. Fungi also live outside in damp areas under leaves, in the grass and in cultivated gardens.

Not all fungi are airborne. Some fungi can be found in foods that are prepared with the help of fungal activity like aged cheese. Fungi have also been used in the preparation of wine, beer, bread and cake. In other instances, fungi may appear as a contaminant. Fungi may contaminate foods that are constantly exposed, such as potatoes, onions, fruits etc.