Original: Aspiration pneumonia Aspiration pneumonia (or aspiration pneumonitis) is caused by aspirating foreign objects which are usually oral or gastric contents, either while eating, or after reflux or vomiting which results in bronchopneumonia.
Simplified: Aspiration pneumonia Aspiration pneumonia (or aspiration pneumonitis) is caused by getting oral or gastric contents into the lungs, either while eating, or after reflux or vomiting.