Hi I've just found these and they are such a good idea, you can clip your inhaler to your key ring or lanyard or handbag or rucksack etc etc
You can buy them or make them if you can crochet or know someone who can crochet. It takes just a wee while probably less than an hour to make one.
I've written a free pattern available here: stitchingandhookingpassions... or you can buy one by googling BEAG inhaler cosy or see link on the blog above.
Hope this helps someone.
Ps if you need to learn to crochet I can help/ advise on that too. Very relaxing and can help with stress.