Yes, fans help a lot!
The proper mental model is to augment indoor air quality by taking steps to reduce the dose of circulating virus you can breath below the level of an infectious dose.
Fresh air ventilation reduces the concentration of virus laden air by diluting the fraction of exhalate by adding air free of virus and displacing virus laden air.
HEPA filtration removes the virus containing droplets and aerosols from the air.
Fans break up concentrations of exhaled virus and disperse them more fully across the full volume of air in the room so any one breath is less likely to contain a concentrated dose.
The proper mental model is to augment indoor air quality by taking steps to reduce the dose of circulating virus you can breath below the level of an infectious dose.
Fresh air ventilation reduces the concentration of virus laden air by diluting the fraction of exhalate by adding air free of virus and displacing virus laden air.
HEPA filtration removes the virus containing droplets and aerosols from the air.
Fans break up concentrations of exhaled virus and disperse them more fully across the full volume of air in the room so any one breath is less likely to contain a concentrated dose.
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