Brown buds?

I grew this outdoors this summer. I dried and cured it and left the jar in the garage in a dark place but it was kind of hot this summer. Then in December I brought it inside and put it in a cupboard. At that point all the buds were green. I haven't opened it since then until today when I noticed a few are brown and the jar smells off.

All the buds in here were from the same plant so dried and cured the same way. Does this look like mold? Id expect the other buds to have mold as well if it was mold. They're also not fuzzy or anything.