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The potential reasons for your asthma could be many, depending on how one's body reacts to specific circumstances or environment. Some get allergic to dust particles, pollutants, smoke, whereas others get an attack irritated by pollens or other environment sources. Allergy to pollen and other environmental pollutants causes discomfort, generally during spring, summer, and fall, but there are certain allergic foods that make asthma worse and allergy to food could occur at just any given point of time.