What in the environment can trigger an asthma attack?

Multiple things in the environment can trigger asthma attacks. People who have allergy problem inhaling ragweed or mold pollen or grass pollen can trigger it. Some people are sensitive simply to exercising in cold air or hot air. Exercise-induced asthma is the temperature of the air and the lack of or the excess of humidity in the air that can trigger the attack when they’re exercising.