I am a retired hygienists new to bronchiectasis.
I just went to a new practice in our winter location in Az. I explained to the dentist, hygienist and endodontist, ( I needed a root canal). None of them knew about BE. Neither did I until I was diagnosed. They were very receptive to accommodating me.
I used to let my patients hold the suction during their cleaning appointments and used it whenever they needed. Sometimes the smallest amount of having control in the chair makes a difference. Some patients even asked to use the water spray. Kids got a big kick out of all this hands on and turned them into great patients. Some people just need a mild anti anxiety med to take the edge off. Ask your MD.
Most people in the profession know that the majority of people have anxiety in the chair. I always told my patients to make sure they were comfortable with each clinician. Ask to see someone else in the office or change practices. It is better to lose you as a patient then you stop going to the dentist because we want you to keep up with your oral health.
An ounce of prevention is worth a pound of cure. Find someone you are confident and comfortable with.