A simple Airthings or Awair air quality monitor shows you the VOC rate in the home and it is easy to see how a fan keeps the levels at zero or even just opening

A simple Airthings or Awair air quality monitor shows you the VOC rate in the home and it is easy to see how a fan keeps the levels at zero or even just opening a window drops the pollutant rate to almost zero very very quickly after cooking. I trust my data over internet opinions.