The "gas supply" you're referring to is most likely an "air-assist". Laser cutting works better when you have a flow of air (just air), blowing the smoke out o

The "gas supply" you're referring to is most likely an "air-assist". Laser cutting works better when you have a flow of air (just air), blowing the smoke out of the way. Many folks use small compressors for this purpose. But it won't have anything to do with CO levels.