This really is a serious question - I just haven't figured out a way to word it better -
I have fabric in stacks - and plastic bins -
Every once in a while the fabrics get rotated when I'm looking for something (excavating) - is that enough 'airing out' for them? How often should they be refolded? Is that even necessary?
The ruler method of folding works well - but should they fabrics be refolded every couple of years? (I'm reasonably sure that at least some of us have fabrics that are more than six months old.)
I had my DH drill holes near the tops of some of the plastic bins - air now gets in - but then so can bugs.
(Although I did not notice any bugs in those bins)