Someone once told me that extended use of Ventolin Inhalers for asthma can adversely affect one's voice. This is a concern for me since I have asthma and singing is my heart's delight.I've also been told that dringing coffee or having milk products before singing isn't good for one's voice. I've never noticed these things affecting my voice, but I guess it's something to keep in mind.
My thoughts are with you!
Moira, Yellowknife, NT., Canada