BZ wrote:
I have a one-room building out back that's been closed up for a long
time and has taken on that characeristic musty odor that storage
facilities sometimes get. I've tried a window fan, but as soon as the
fan gets turned off, the odor is back.

Would one of those ionic air cleaners solve the problem?

Thanks.

Call a fire or mold restoration outfit. They have industrial ozone
machines that should take care of it. They also can take a look around and
may spot a problem that you have missed.

--
Joseph Meehan

Dia 's Muire duit