Treating a chemical hazard begins with identifying and containing the hazard to prevent further exposure. For spills, use appropriate neutralizers, absorbents, or containment materials, depending on the chemical. For exposure, administer first aid as indicated on the SDS, such as flushing affected areas with water for corrosive substances or moving to fresh air in case of inhalation hazards. Always call for professional medical or environmental assistance if the situation is beyond immediate control. Post-treatment, investigate the cause of the incident and revise protocols to prevent recurrence.