Which of the following is NOT a way to be exposed to chemical hazards?

Contamination refers to the presence of hazardous substances on a surface or in an environment but does not directly describe a method of exposure. In terms of chemical hazards, exposure typically occurs through specific routes such as inhalation, where hazardous vapors or particles are breathed in; ingestion, which involves swallowing chemicals or contaminated materials; and absorption, where chemicals penetrate through the skin or mucous membranes. On the other hand, contamination itself is more about the existence of chemicals in an area or on an object rather than a direct route of exposure. Understanding this distinction highlights why contamination is not considered a method of exposure to chemical hazards.