towngas or coalgas that is piped in for cooking is hydrogen and carbon monoxide, has all the other possible sources of carbon monoxide been ruled out before nai

towngas or coalgas that is piped in for cooking is hydrogen and carbon monoxide, has all the other possible sources of carbon monoxide been ruled out before nailing it on the laser cutter or 3d printer? https://en.wikipedia.org/wiki/Coal_gas https://en.wikipedia.org/wiki/Coal_gas i'd prefer it that the 'authorities' do a thorough and scientific investigation and release the results in public on the internet, this needs to be proven beyond all doubts that it is caused by the laser cutter or 3d printer if this is not done, it would stir worldwide unnecessary panic about laser cutters and/or 3d printers by saying that laser cutters and/or 3d printers produces carbon monoxide and is dangerous and hence cannot be used i'm not sure about laser cutters but normally 3d printers is more a fire hazard than do anything else, i.e. 3d printers main hazard is fire, but carbon monoxide is likely 'fake and invalid/assumptions/speculations'