Air quality (office) plus air emissions from food manufacturing

Hi team,
we are looking for any business to share their experiences and tools for

  1. measuring and improving indoor air quality in offices
  2. measuring and monitoring air emissions (pollution) from the manufacturing of ideally a food business.

We have found consultants who can do this, but more keen to chat to a businesses who has set this up/done it themselves.
send my way please?

Louise