**Core Concept**
Pulmonary symptoms can have non-pulmonary associations due to various systemic conditions that affect the respiratory system. This can be seen in conditions such as cardiac failure, where pulmonary edema occurs, or in conditions like anemia, where increased ventilation occurs to compensate for decreased oxygen delivery.

**Why the Correct Answer is Right**
The correct answer refers to a pulmonary symptom that does not have a corresponding non-pulmonary association. This implies that the symptom is primarily caused by a pulmonary condition itself, without systemic involvement. For example, pleuritic chest pain is often associated with pulmonary embolism, which is a non-pulmonary condition that affects the respiratory system.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because conditions like asthma can have non-pulmonary associations, such as gastroesophageal reflux disease (GERD) or allergic rhinitis.
**Option B:** This option is incorrect because conditions like chronic obstructive pulmonary disease (COPD) can have non-pulmonary associations, such as cardiovascular disease or malnutrition.
**Option C:** This option is incorrect because conditions like pneumonia can have non-pulmonary associations, such as sepsis or multi-organ failure.

**Clinical Pearl / High-Yield Fact**
It's essential to consider non-pulmonary associations when evaluating pulmonary symptoms, as this can lead to accurate diagnosis and management of the condition. For example, a patient presenting with dyspnea and pleuritic chest pain may have a pulmonary embolism, but also needs to be evaluated for non-pulmonary conditions like cardiac failure or anemia.

**Correct Answer: D. Wheezing. Wheezing is primarily caused by airway narrowing, which is a pulmonary condition itself, without systemic involvement.**