Hi again, CM7d834, and thanks for the update. Like you, I am somewhat disappointed in the physician's inability to guide you! If he truly didn't know, he might have referred you to a specialist (an ENT physician or even an allergist). On the other hand, as you pointed out, it may be one of those 'unusual' and inexplicable little annoying symptoms that may be related to COPD.
As you pointed out in your initial post, It could be an idiosyncratic way for your body to alert you that oxygen would help at that particular time! Your body telegraphing you an 'early warning' sign can be viewed as a special talent!!!
What do you think?
Leon (site moderator COPD.net)