It doesn't make sense

Let's say that humans, for whatever reason, had an unexplainable desire to take some dust in their hands and blow it up into the air, daily, sometimes more than daily. Let's further suppose that this dust was extremely microscopic and basically left no traces as it fell to the earth. Let's also suppose that this dust tends to linger in the air for a long time and for all practical purposes never really falls to the earth. And while still very small, let's suppose these microscopic dust particles have a very offensive odor. And because of this, humans felt a desire to make this dust blowing act a private thing. If humans did indeed have this unsuppressible dust blowing desire, wouldn't you think that corporate america would be designing workplaces with designated one-occupancy "dusting closets" in which this activity could take place, the air purged, and the area made ready for the next person? Now I ask you, "why, in my place of employment, do we have 4 toilet stalls lined up next to each other, in the same open-air location as each other, and in the same airspace as the urinals and the sinks?"