The present invention relates to a fragrance or paint sprayer. The sprayer, comprises a spraying mechanism, two liquid containers, a liquid adjustment mechanism; the spraying mechanism having a knob for activating a pump or a release valve for dispensing a liquid coming from an inlet to an outlet; two liquid feeding tubes, one end of each of the two liquid feeding tubes being in liquid communication with each of the two liquid containers respectively, and the other end of each of the two liquid feeding tubes being jointed and connected to the inlet of the spraying mechanism; the liquid adjustment mechanism comprising two sets of adjoining sloped surfaces and sets of rollers in surface contact with respective flexible portions of each of two liquid feeding tubes and, when the rollers are moving from right to left, changing flow passage areas inside the flexible portions in such a way that the amount of liquid supplied from each of the two liquid containers through each of the two liquid feeding tubes is adjusted. When flow of liquid from one feeding tube is increased by the adjustment mechanism, the flow from the other feeding tube decreases in a way that the total amount of the liquid supplied by the two feeding tubes is substantially constant. In practice, it is possible to mix two liquids, such as two different perfumes with different fragrances to create a new fragrance, or two different color paints to create a new paint color.