My daughter 24 has been on oxygen for at least 2 years, she is now on 8-10 continuous flow. Since about 6 mos ago (o2 was 5-6) we noticed that she seems to have trouble hearing. At first I thought it was cause she was hearing oxygen in candila. Our conversations usually are I say something she says what and I repeat. yesterday she told me not hearing is annoying I said really and she said what???? lol. I am debating writing up signs. Just wondering anyone else having hearing issues on o2. She is on Creon, Dornase, albuterol, Tobi every other mos.