I need to test my home air quality while cooking, but I've found that running the bathroom exhaust fan helps. Also, most central HVAC system already recirculat

I need to test my home air quality while cooking, but I've found that running the bathroom exhaust fan helps. Also, most central HVAC system already recirculate air (albeit quite slowly). Most residential living rooms have an ACPH (air changes per hour) of around 6-8.