What is the primary danger associated with infrared radiation?

The primary danger associated with infrared radiation stems from its ability to produce heat when it is absorbed by materials, particularly human skin and tissues. This heating effect can lead to burns or other thermal injuries if exposure is prolonged or intense. Infrared radiation is not visible to the human eye, which can lead to individuals being unaware of their exposure and the subsequent risk of overheating. This can be particularly hazardous in industrial settings where infrared sources, such as furnaces or certain manufacturing processes, are present.

While other options address potential hazards related to infrared radiation, they do not capture the core threat as effectively. Burns from a chemical reaction are not directly related to infrared exposure. Reduced visibility is more associated with other types of radiation or environmental conditions, and electromagnetic interference typically pertains to radio waves or microwaves, rather than infrared radiation. Therefore, the risk primarily involves the heating effect of infrared radiation on skin and tissues, making this the correct emphasis when considering its dangers.