I what to try scuba diving but i got asthma can i still try it?

Get the opinion of a doc who knows you and your level of control before you try anything like this. An asthma event under water could easily end in death. If you never have break through events & are so well controlled you seldom think of asthma as a thing. it might be okay.

Just be certain that your asthma is well controlled. See your allergist or pulmonologist for evaluation and pulmonary function testing and discuss with that doctor.