[fullmetal]

Good indoor ventilation no longer means what it used to mean.  Prior to covid, I think good ventilation would have meant active circulation of air that mixed fresh, filtered air with recircled air.  Now, I think good ventilation means removing exhaled air from the vicinity of people as soon as possible.  When outdoors, the wind tends to do most of the work.  Indoors, active circulation means exhalation from one person has a higher likelihood of contacting more people...!

Cube farms or open office plans = nope.  Individual offices = nice.

If your HVAC system was designed to remove air from the ground level while adding air from above, you could definitely make the argument that the exhalations would likely flow to the floor and be removed from immediate proximity to others, but barring that, active indoor circulation might be counterproductive.

Short guess: most indoor gatherings are still not great under any reasonable distance.

[fullmetal]

Good indoor ventilation no longer means what it used to mean.  Prior to covid, I think good ventilation would have meant active circulation of air that mixed fresh, filtered air with recircled air.  Now, I think good ventilation means removing exhaled air from the vicinity of people as soon as possible.  When outdoors, the wind tends to do most of the work.  Indoors, active circulation means exhalation from one person has a higher likelihood of contacting more people...!

Cube farms or open office plans = nope.  Individual offices = nice.

If your HVAC system was designed to remove air from the ground level while adding air from above, you could definitely make the argument that the exhalations would likely flow to the floor and be removed from immediate proximity to others, but barring that, active indoor circulation might be counterproductive.

Short guess: most indoor gatherings are still not great under any reasonable distance.