Avoiding Asthma TriggersHow to avoid asthma triggersMany things can trigger an asthma episode, including the following:Upper respiratory infectionsAllergies to dust mites, pollens, animal dander, mold/mildew, or cockroachesExerciseIrritants such as cigarette and other forms of smoke, strong odors and perfumes, fumes from wood stoves or kerosene heaters, and air pollutionWeather changesThe followin