Thats kinda how the DOG is for me. Its got such a strange smell very rubbery/kushy. And same shit happens. Cured for a few weeks. Opened every once in a while. But something a little different happens for me. I crack the jar and stick my nose in and it smells under cured or "stale" like you said. So i leave the jar sit while i grab a shell to roll up and grab a drink. Come back into the room where i have my jars and BAM smells like im growing/smoking the thraxxx of all thraxx. Crazy, it almost needs to decant hahaha like some wine.
And i get the same reaction as you jojo. They look at it and see the frosty coat of trichs gets em interested then go to smell it and look at me like im on some other shit. Roll up a lil blunt and theyre coughin like its the first time they smoked. Eyes instantly red and passin on the blunt. hahaha. Very quick turn around.