The food industry is also a large user of fragrance chemicals known as flavors or aroma chemicals when used in foods. Virtually every aspect of our lives is impacted by the Fragrance Industry. In the past many products had generic scents that identified their use, rather than brand. Most laundry detergents had the basic same odor and most cleaners either had a pine or lemon scent. This is no longer the case.
Laundry smells fresh for days.
Advertising campaigns are based on the odor rather than the performance of products. Entire industries are built around the perception of odor. The sense of smell is the least understood of the senses and often considered the less important of the senses. Yet it is the basis of multi-billion dollar industries. The key is a mixture of biological response, psychology, and memory.