I am not usually patient enough to cure buds. Normally i hang em for a week or 2 and smoke away. This time however I have decided to put some into a sealed jar when i would usually have considered them smokable. They dried for 4-5 days hanging in the dark I placed them in their jar roughly 8 hours ago I just opened the jar and it no longer even smelled like bud kind of stank actually. Prior to putting them in the jar they had a great aroma. Is this normal?

not really but they may be to moist for the jar, if there still really damp I would take them and dry them some more on a screen, do this until when you bend the stem and it snaps , then re-jar and cure.
If they start to smell like ammonia that means there starting to get moldy.