@jwildeboer
How do you do that at home? I have got Levoit Air Cleaners running and I am looking for inspiration.
@tpheine I have a Dyson air cleaner but I also have zero allergies and live alone, so not that big of a topic. I worry more about offices and cinemas, museums.
@jwildeboer And decent ventilation helps to expel CO2, which will help you concentrate.