Natural Asthma Remedies: Effective Herbal & Supplement Relief

I have mild asthma and saline nose spary helps to releave my breathlessnes. I don't know why it works but it does. I have had times where I just couldn't seem to catch my breath but I haven't had that problem since. I just spary a little of the mist in the smeller and it relieves the symptoms. The brand I use is water and .65% salt. I am curious if I will be able to mix my own solution once i am out of this spray.