Asthma attacks are increased by alot of things, stressing out about your inhaler is not going to help. They use the medication in it for infants and the elderly so you're probably safe, if not you still will be okay just need to switch types. Look at this way you are willing to inhale tar, nicotine, arsnic and all kinds of other junk with your smoking it doesn't make sense to worry about alittle medication that should make you feel better. If you want to get better stop smoking, if not, then you are not going to get better, your choice. Choose and then deal with the results that's what we all have to do as adults. I read all the susgestions and ideas in your not smoking thread from all different members of this forum, go back and read it, they have already answered your questions about smoking, told you how bad it is for you, made susgestions on how to quit, the only person who can help you quit is you and nothing anyone else says is going to change that. You are a grown man, you need to make you choices, and stick with it.
I wish you good luck