Chronic obstructive pulmonary disease (COPD) is a term used to describe a group of respiratory conditions like chronic bronchitis, emphysema, and lung inflammation. It leads to breathing difficulty, excess phlegm, wheezing, cough, chest pain, and other symptoms. While many know that external pollutants can trigger COPD, the risks in the indoor environment are often overlooked. Here are seven common household items that may harm the lungs and contribute to the development or worsening of COPD. Air fresheners While air fresheners are designed to enhance indoor air quality, they often contain volatile organic compounds (VOCs) and other chemicals that can irritate the lungs and throat.