Above is an article about the virus which among other things finds the virus can stay in the air for 3 hours in the lab and suggests 30 min in real life settings as an aerosol and remain viable to infect.
In my opinion everyone should have a portable room air filter in their home and especially the office. To capture air borne particles including covid-19 that is in aerosol form.
I helped to design and produce the Defender air cleaner by Filter Queen more than 25 years ago and have been involved in the filtration industry ever since.