If you're still checking this thread:
See what trees/plants you're near in the woods.
Pinene, for example, is a significant bronchodilator.
Pinene, for example, is a significant bronchodilator.
You may want to look for a really nice source of essential oils, or terpenes, and put it in a diffuser.
I won't go so far as to recommend it, but I personally learned about this in the context of vaporization (not "vaping") of hemp/cannabis, but the related oils are found in plenty of other plants, and/or as concentrates for putting into the air, or into you in various ways.