You shouldn't.
Proper mask usage involves putting it on and the not taking it off (or touching, or adjusting it) until its no longer needed.
If the person is driving between stores, retaining the mask is the correct behavior, even if it does look weird.
I agree.
But if you're going to wear a mask because you believe the hoax, at least wear it correctly.
Which is why we cancelled our cleanings. Hate the damn things anyway. And we weren't due for X-rays. I'll just keep scrubbing twice a day (with a non-flouride toothpaste…)
FYI, did you know there's never been a single scientific study done on the effectiveness of flossing?
Not one.
Never.
Anywhere.