There is a musty smell coming from the basement closet, but there is no sign
of damp, nothing stained on the drywall or carpeting, no visibile moisture.
Although we did put a paper poster in there and a week later it was soggy
and ruined. But no visible water anywhere.
The smell is quite strong. We thought we got rid of it by rubbing the
carpeting with baking soda and vacumming an hour later, but the next day the
smell was back.
Could it be just humidity in the basement? And would the humidity be more
likely to accumulate in the closet?
Should we tear up the carpet in the closet and see if there is a crack in
the concrete underneath?
If there is should we just apply seal it with something?
There is no smell anywhere else. Just the closet.