Yes, streptomyces fungi is also the cause of that smell nunya is mentioning I believe. The moment I heard this several years ago it clicked immediatley. Look into the fun that is Korean Natural Farming and their fungi recipes!

I'm not surprised but I did not know that.

I have always believed that digging in the dirt challenges and then charges the immune system.

The dude who discovered this fungus (who was of Japanese descent) probably knew about the fungus, though I had no idea about it.