Thanks for reaching out with this inquiry. The smoke is certainly on everyone’s mind right now.
Last summer, David Caudwell presented a ‘Herbs for Smoke/Wildfire Season’ virtual class. I highly recommend checking it out here! https://pacificrimcollege.online/past_classrooms/lung-support-during-wildfire-season-herbal-formulation-techniques/
You can watch the video and download the course notes.
I hope this helps!