Which symptom is NOT associated with upper respiratory infections (URI)?

Shortness of breath is generally not associated with upper respiratory infections (URIs). URIs primarily affect the nasal passages, throat, and sinuses, and common symptoms include runny nose, cough, and sore throat. These symptoms are typically related to mucosal inflammation and irritation caused by viral infections, such as the common cold.

In contrast, shortness of breath is more commonly linked to lower respiratory conditions, such as asthma, chronic obstructive pulmonary disease (COPD), or pneumonia, where the lower airways and lung function are affected. While individuals with URIs might occasionally experience mild breathing discomfort due to nasal congestion or related symptoms, true shortness of breath typically indicates more serious involvement of the respiratory system. Thus, shortness of breath stands out as the symptom least likely to be associated with upper respiratory infections.