What symptom can indicate exposure to toxic aviation fuels?

Coughing is a notable symptom that can indicate exposure to toxic aviation fuels. When individuals are exposed to harmful substances, especially those found in aviation fuels, the respiratory system can be adversely affected. Toxic inhalants can irritate the airways and lungs, leading to inflammation and resultant symptoms such as coughing. This response is the body’s way of attempting to clear irritants from the respiratory tract.

The other symptoms listed are not typically associated with exposure to aviation fuels. For example, irritability may occur in various situations but does not specifically correlate with fuel exposure. Increased appetite and heightened senses are also not recognized symptoms of such exposure. In contrast, coughing serves as a direct physiological response to irritants, making it the most accurate indicator in this context.