Toxins can affect pulmonary function in various ways. Acute exposure to irritants like [ammonia]() or [chlorine]() can cause immediate respiratory distress, leading to symptoms such as coughing, wheezing, and shortness of breath. Chronic exposure to substances like [asbestos]() or [silica]() can lead to long-term conditions such as [pulmonary fibrosis]() and [lung cancer](). PFTs are crucial in detecting these changes early, allowing for timely intervention.
