The phrase "exposure to harmful chemicals" refers to being in contact with or coming into close proximity with substances that can cause damage, injury or discomfort. These chemicals may be present in various forms such as gases, liquids, or solids and can have a range of negative effects on human health and the environment. Exposure can occur through ingestion, inhalation, skin contact, or eye contact, depending on the nature of the substance. The severity of harm depends on factors like concentration, duration, and frequency of exposure, as well as individual susceptibility to specific chemicals.