Truly the simplest response is
I have a Medical condition.
We, all have the Same condition.
It is called the condition of Fresh Air!
I must be be able to breath fresh air regularly without increasing my carbon dioxide intake.
The CDC it states if you have a medical condition you need not wear a mask!
So if I have the Dirty Wuhan Holocough, which is a medical condition and thus disqualifies any of U.S. from wearing masks!
It’s in their own guideline!
Breath!