I mean, they could do stuff like stop putting those dangerous hydrofluorocarbons into the inhalers.
I mean, it kinda seems like the solution suggests itself.
If you wanted to get really fancy, I'm sure that there's some sort of lithium battery powered motor pump contraption that could easily compress air and use that as the accelerator for the medicine.
Then all you would need to do is deploy a new medicine cartridge for your inhaler, and you get rid of the hydrofluorocarbons completely.