What are some things that exacerbate copd?

Top Five. The top fice factors that can cause a COPD exacerbation include allergies, bacterial/viral infection, pulmonary embolism, heart attack and non compliance to medical regimen. There are others but these cover the majority.
Many. Most common things are acute respiratory infections URI mostly viral , flu or colds, and inhaled allergens or toxic gases, inadequate dose or lack of medications ( bronchodilators, steroids, oxygen).