To provide a shading device such as roll screen, or the like, capable of continuing the diffusion of aroma over a long period by giving off a smell when a shading surface is exposed and regulating the smell when the shading surface is retreated or wound up.

This roll curtain 10 comprises a surface-like screen 11, a winding device 12 capable of winding the screen 12, and a case 14 capable of housing the screen 11 and the winding device 12. A prescribed aromatic is applied to at least one side of the screen 11, so that the smell of the aromatic can be dispersed when the screen 11 is pulled out.