VOC gas detector check the air quality good to breath or not

VOC means volatile organic compounds. VOC is the common sense of organic matter.
However, the definition of environmental protection is a kind of volatile organic compounds,
which is a kind of active volatile organic compounds, which can produce a kind of volatile organic compounds.
We use voc gas detector to check air quality.  and the home gas detector can check other gas too.
Use the air pumping way to check result.   the accuray is 95% around.