There are numerous types of allergies, each with a different impact on an individual. Respiratory allergies are caused by airborne proteins that irritate the airways. Fumes which can be found both indoors and outdoors, can worsen breathing problems brought on by allergies. Allergens like pollen, mold, or dust mites can worsen allergic asthma in people. It is advantageous to be aware of allergens to prevent issues. Here are some examples of common allergens that make breathing difficult: Common allergens that cause breathing problems Pollutants People with allergies exposed to airborne pollutants may experience respiratory symptoms like coughing, wheezing, or difficulty breathing. Pollutants can irritate and inflame the lungs as well as the airways. Some asthma triggers are ozone, chemicals, cleaning products, odors, and smog. If these contaminants are inhaled from the environment, they can cause allergic reactions and respiratory problems. Indoor allergens Indoor allergens trigger asthma attacks in children and adults with allergies. These allergens include pet dander, mice, cockroaches, and dust mites. They are primarily found in homes, and can cause asthma flare-ups all year. Some solutions include using allergy-proof mattress covers and washing linens weekly in hot water to kill dust mites. A dehumidifier can also help prevent mold and mildew growth in the home.