People with asthma have sensitive airways all the time. They only experience symptoms when they come into contact with a trigger.
Different people have different triggers and most people have several.
Food and drink are not common triggers for people with asthma. An allergic reaction occurs when the body's immune system reacts abnormally to a harmless substance. A food allergy is an inappropriate immune response to certain foods. An anaphylactic reaction is a very severe allergic reaction. The whole body is affected.