Flavour and Fragrance substances are comparatively strong smelling organic compounds with characteristic usually pleasant odours. They are, therefore, used in perfumes and perfumed products, as well as for the flavouring of foods and beverages. Whether a particular product is called a fragrance or a flavour substance depends on whether it is used as a perfume or a Flavour. Fragrance and Flavours are like taste substances, chemical messengers, their receptors being the olfactory cells in the nose. Flavour and Fragrance ingredients are the most numerous single group and highest-value intentional additives utilized by the food and personal care industries.