Can pulmonary infarction be asymptomatic? I think it can because there are many parts in lungs. Like for some COPD patients. However, I am not sure if COPD patients can have infarction. Lungs have parallel circulation. Red infarct is possible there. Blood can flow there. One symptom should be at least pain. So now, I think no asymptomatic possible. But still, I am not sure. Can pulmonary infarction be asymptomatic?

No. Based on experience. Lungs are very active organs.