Toxicology is the study of the adverse effects of chemical substances on living organisms. In many industrial settings, workers may be exposed to hazardous chemicals that pose significant health risks. SARs are essential tools for protecting individuals in these environments, where toxins may be present in concentrations that exceed recommended safety limits. By providing a reliable source of clean air, SARs help prevent inhalation of toxic substances, reducing the risk of occupational diseases and acute poisoning.