We have a 12'x20' building designed as a wind tunnel in order to test devices that need air flow such as the house fly z-9 tricosene (which doesn't blume to allow attraction without some air flow) or other pheromones.

We have a repel-o-meter which can be used with and without air flow for wind-tunnel testing.

Various olfactometer designs and methods are available for testing pheromones, attractants, and repellents.