Moulds are naturally occurring clusters of microscopic which reproduce by releasing airborne spores.
Certain individuals will develop and nasal symptoms if they breathe in these spores and thus
have a Mould Allergy.
Many people are allergic to mould. Mould spores are carried in the air and may be present all year long. Mould is most prevalent indoors, in damp locations and in swamp coolers, bathrooms, washrooms, fabrics, rugs, stuffed animals, books, wallpaper and other "organic" materials. Outdoors, mould lives in the soil, on compost, and on damp vegetation.