Geosmin is an organic compound known for its unmistakable earthy smell, especially the scent that rises from soil after rain. It is one of the key contributors to petrichor, the familiar aroma of wet earth, damp ground, beetroot, and freshly disturbed soil. In perfumery, geosmin can be used in very small amounts to create realistic earthy, mineral, rainy, and soil-like effects. It works well in nature-inspired, green, woody, mossy, rooty, and experimental compositions where a true damp-earth impression is needed.
