Growing is life
Exactly, tunneling air to create a choke point, so that your getting increased air flows. It's a brilliant strategy no doubt. I see this all the time standing among the tall buildings in downtown Seattle, especially around the corners. Your essentially increasing the evaporation off the surface of the plant by targeting the air flow.I have to add here that we are unable to control the environment to any real degree. So we use it to our advantage. We know that plants thrive outside here, so we mimic it as best we can with open tents and enough fans to re-create the trades inside. (15-20 mph breeze we usually have.) We have had zero issues with PM or bud rot even though it is insanely humid often.
Warm air can hold more water vapor than cold air. When warm, humid air is cooled, it can’t hold as much water vapor (RH rises), so the excess condenses into liquid water. That’s why cold surfaces “sweat.” Dew point is the temperature that will cause condensation or when the RH is 100%. The solution to condensation (sweating surfaces) is to reduce the relative humidity of the air (which lowers the dew point temperature) or keep surfaces warmer (above dew point).
Simply put, the higher your humidity, the higher should be your air movement. Heating the air (going into the fan) should also help.