It used to smell kinda sweet and kinda like alcohol which I understand would be from fermenting yeast. But it doesn't smell anymore.
idk but dont look fully colonized either. bury it in some potting soil keep moist/ maybe the casing will cure it..
Looks overlayed Meaning the surfce is covered in a layer of dead mushroom mycellium due to unfavorable conditions. Just keep fanning it and keep the humidity up and you should still get some mushrooms.