Why is it hazardous to use an internal combustion engine forklift in a confined area?

Using an internal combustion engine forklift in a confined area is hazardous primarily because it can lead to breathing in dangerous gases and fumes. Internal combustion engines typically emit carbon monoxide and other harmful pollutants as byproducts of fuel combustion. In a confined space, these gases can accumulate quickly, posing serious health risks to operators and nearby individuals. High concentrations of carbon monoxide can lead to symptoms ranging from headaches and dizziness to more severe issues, such as unconsciousness and even death.

While other factors like noise and potential obstruction of exits are notable concerns, they do not pose as immediate a health risk as inhaling toxic fumes. The risk of overheating and fires, though important considerations, are more related to operational precautions rather than the direct hazards associated with air quality in confined environments. Therefore, the focus on air quality and the hazards created by gas exposure makes this option significantly relevant when considering safety in confined areas.