A spray, flis flís, aerosol, spray, spray, atomizer, vaporizer or sprayer is a container where a liquid is stored, which has a device at the top that allows that liquid to be expelled in vaporized form (reduced to very fine droplets). The ejection mechanism can be activated manually or by gas.

One of the uses can be observed in agricultural machinery, where it is used to carry out phytosanitary applications. It is also used to apply perfumes and cleaning products.

18th and 19th centuries

The concept of the sprayer originated in the 1790s, when self-pressurized carbonated beverages were introduced in France. In 1837, Perpigna invented a soda siphon, incorporating a valve into the beverage container. In 1862, metal sprayer cans were tested, constructed of steel and too heavy and bulky to be commercially successful. In 1899, inventors Helbling") and Pertsch") patented pressurized aerosols") that used methyl chloride and ethyl chloride as propellants.[1]​.

20th century

On November 23, 1927, Norwegian engineer Erik Rotheim patented an aerosol can with a valve. This was the precursor to the modern aerosol. In 1998, the Norwegian Post Office issued a postage stamp commemorating the invention of the aerosol.

Second World War

In 1941, Americans Lyle Goodhue") and William Sullivan"), who were credited as the inventors of the modern sprayer. During the 1940s, mass production of aerosols took place in the United States. It was an insecticide called "bug bomb" developed by Goodhue and Sullivan. Soldiers used it to combat insect diseases in the Pacific during World War II. Fifty million units were manufactured, and some of them found their way to the American market after the war as army surplus.