Doctor Jonathan Fellus Qualified tips provider.Think about getting a flu shot. If you have asthma regularly, your lungs have more risks have getting infected. A flu shot should protect your lungs from common types of infections. If you have a child with asthma, you should definitely get them a flu shot to prevent them from developing any severe lung infections.Doctor Jonathan Fellus Certified tips provider.Do not swim in pools that contain chlorine if you have asthma. The chlorine can trigger asthma attacks or make your symptoms worse. If you are unsure if the pool that you are going to swim in has chlorine or not, ask a lifeguard or the manager of the facility.