AMEN! to the CPAP. I used to borrow my husband's CPAP during the day when I was in respiratory distress. Does his have a water reservoir to humidity the air he's breathing? Also sessions in a steamy shower if that's a reasonable possibility.
Stay ahead of it as much as possible!
And absolutely consult the doc before using the inhaler. ...but I'm glad to hear you have one. Even so, one with a steroid may be called for. So far, steroids are the most reliably effective treatment.
Yep, his also adjusts its pressure automatically. When he's awake again I'll get on him about doctors info.