Yes those other smells are from over fermenting or as you observed a little too wet going in.
The secret is getting the drying right initially and then a sympathetic sweating thats the best way to describe it, with practice it will make sense.
But you cant destroy the effects just the flavor and terps so nothing lost.
Also the trippiest effects I have found come from the darker over fermented cobs so its a trade off against terps, taste and highs.
Very intriguing. Can’t wait to try it, just flipped my Killer A5 5 days ago. Going to have to go be this a try for sure. I can see it being great for the smaller popcorn buds too.