Need some advice

Hello all

i have been given oxygen treatment as an abortive measure for what seems to be cluster headache.

i received my canisters today and apart from them being tatty they are also very dirty around the top area, one even looks like it has mould growing on it. I am so concerned about connecting my mask to such dirty things, which by the way is also very dirty dusty. i wondered if anyone else has ever had this because it's my first I don't know what to expect but I really can't allow myself to inhale from these.

If I can attach images of them I will.

thanks

denise