Fragrance is an elusive quality, in that it may be fleeting and change over time. Scents are actually the reaction of certain cells in the nose to volatile compounds emitted by essential oils in plant parts. These oils may come from roots, stems, leaves, or most commonly from flowers. Scents are usually described in relation to everyday items with an odor, such as spices, flowers, fruits, and even unpleasant ones, such as perspiration.
Scent is subjective and is described by each person as either good or bad.
Whether you feel a scent is good or bad depends on personal likes, closeness of the scent, or emotion. What smells pleasant at a distance may be overpowering at close range. Scientists have described several dozen emotional responses to flower scents. Scents actually have a function, usually for pollination by insects. The lighter colors of whites, pinks, and yellows have a pleasant but faint fragrance if any.