Cystic Fibrosis (CF)

The goal of this clinical trial is to learn whether using a high efficiency particulate air (HEPA) air purifier can improve respiratory health in children and adults with Cystic Fibrosis (CF) or Primary Ciliary Dyskinesia (PCD). The main questions it aims to answer are: Can using a HEPA air purifier at home reduce respiratory symptoms in people with CF or PCD? Can it improve lung function and overall health? Researchers will compare participants' health outcomes before and after the use of the HEPA air purifier to see if cleaner indoor air makes a measurable difference. Participants will: Visit the clinic for baseline health assessments (such as lung function and symptom questionnaires). Have two HEPA air purifiers installed in their home. One device will be placed in the main living area and one in the bedroom. Undergo exposure assessments during home visits to measure indoor air quality.