What to do when you can't afford inhaler?

I am on a medicare advantage plan, and haven't purchased my inhaler this year due to cost. Ended up in hospital. I was on Advair HFA and unfortunately can't use any of the powder inhalers due to allergies. Has anyone had any luck getting assistance? If so where? I'm checking myself out tomorrow, which I know is a death sentence, but I can't seem to find a solution and can't live in a hospital. Any info greatly appreciated.