Many children with asthma get less frequent attacks when they grow older. Their asthma may start again when they are older if there are factors that start the attacks again. These triggers may be different for different people. But I've heard that the inhaler is dangerous for the heart. Bronchodilator inhalers had a bad reputation some years ago because they over-stimulated the heart.
Modern inhalers affect the heart less and so are safer.
Any asthmatic should be encouraged to participate in sports. They can prevent exercise induced asthma by having a dose of bronchodilator before they start exercising. They should carry their inhalers with them all the time. Cigarette smoke can start an asthma attack as well as damage the airways. Parents can also harm their children if they smoke when the children are around.