Here's the air condition we find ourselves in: We're missing an r and have a mysterious character space between the hyphen and air — an open-air situation, if you will.
How could such an "air-or" occur?
My theory: The original version said "indoor air-quality report," and an editor wanted to add a hyphen between indoor and air. Instead of inserting the hyphen after the r, however, he accidentally inserted it in place of the r — and I'm airing it for my readers. It's my duty as a voluntary member of the EPA*.
* No, not the Environmental Protection Agency. The Editorial Protection Agency.