To avoid fungus, I just put a few small packets of silica gel (those 'do not eat' things that come with countless products). One little packet in each lens bag is usually enough to ward any fungal spirit off, in case it ever gets humid. After 8 years in home storage one of my Minolta MD lenses got fungus, which is why I started this practice in the first place...plus it's free.
This will only work if you store them in an air tight container and recharge the silica pack each time you open it.
Yep.
I suspect there's a placebo effect happening here.




