My girlfriend has asthma and she been having it for years , can she be cured or no?

Asthma has no cure: Asthma has no cure. All will can is control symptoms. However; you commented that she smokes which make her asthma. She needs to quit and her asthma may considerably improve.

You don't: Asthma is a chronic condition of increased small airway reactions. There are genetic and environmental factors that persist throughout life, usually becoming evident in childhood. One learns to live with their asthma & present medications offer a near normal existence to most. There is no cure, there are programs that promote stability & reduced flare ups through early recognition of problems