Yes, it is entirely possible to work as cabin crew with asthma, provided the condition is well-controlled and does not interfere with your ability to perform safety duties in a high-altitude environment. During the mandatory pre-employment medical assessment, an Aeromedical Examiner (AME) or occupational health specialist will review your medical history and current treatment plan. Generally, if you only require an occasional "reliever" inhaler (like Albuterol) and have not had a severe attack or hospitalization in recent years, you will likely be cleared as "fit to fly." However, if your asthma is severe, requires frequent steroid use, or is triggered by factors common in an aircraft cabin (such as dry air or physical exertion during emergencies), it may be a cause for concern. Airlines are particularly focused on your ability to assist passengers during a cabin depressurization or fire, where air quality could drop. You will usually be required to provide a report from your GP confirming your lung function (Spirometry) results and that you have a stable management plan. As long as you can demonstrate that your asthma is stable and manageable, most major airlines will welcome you to the team.