Carbon monoxide (CO) is a silent killer, making it one of the most dangerous threats on the construction site. CO is odorless, meaning that whether it’s present on its own or among other “regular” gases and smells, it’s utterly undetectable.
Within minutes of inhaling carbon monoxide, you can become unconscious and suffocate. Construction workers and welders are especially at risk. There is an increased risk of CO exposure in boiler rooms, warehouses, petroleum refineries, and steel production plants.