No need to stop using your steroid inhaler for your asthma. I've used a variety of inhalers for my COPD for several years.
The % of steroids in inhalers is very low & has no affect on parasites that travel through the lungs as part of their life cycle.
For my COPD, taking the supplement N-Acetyl-Cysteine (NAC), 600mg, 3 times daily, has greatly improved my breathing & eliminated inflammation & mucous buildup in my lungs.