Abstract: A vapor display device includes a water tank [101], an expansion chamber [102] for creating vapor (which may contain scents), an airbox [104] for creating a laminar flow of air and vapor, and a projector [107] for projecting light onto the vapor display screen. The airbox has a series of mesh and honeycomb panels, preferably made of hexagonal cells having 3/16 inch width. Preferably, the vapor consists of water droplets having mean diameters in the range from 10 to 20 microns, and the laminar flow of air and vapor comprises between 1% and 5% water vapor. Potentiometers allow user control of vapor density, vapor flow speed, and airflow speed. A modular design allows the device to be used in different orientations.