I want to buy this g....is this mean it's this g is not harmful?

Carbon monoxide is a highly toxic gas It combines with hemoglobin over 200X stronger than oxygen.It is odorless colorless and tasteless and can cause uncounsciousness ands death at exposures much over 50ppm. Exposure to carbon monoxide cab cause chronic damage to th heart and circulatory system..Carbon monoxide should only behandled by professionals in special gas lines and vessels.