I stopped by an old man's farm years ago to collect some money he owed me, found him in the barn behind a pile of old moldy hay.
He didn't farm any more, the hay really stunk like he had just stirred it up, he hand me some old c notes.
They were from the 30's, slightly moldy, and stunk just like that hay. I thought if some thing happened to the old guy, I would check it out, and then a year later his barn burned down.