A blue inhaler for asthma typically contains a medication called a short-acting beta agonist (SABA), such as albuterol or salbutamol. These inhalers are used to provide quick relief from asthma symptoms like wheezing, coughing, and shortness of breath by relaxing the muscles around the airways, making it easier to breathe. Individuals with asthma need to carry their blue inhaler with them at all times for immediate use during asthma attacks or flare-ups. However, frequent use of a blue inhaler may indicate poorly controlled asthma, and it's essential to consult a healthcare professional for proper management and adjustment of asthma treatment.