the grass smell is normal.. it will go away the longer you cure them..
you can always take a small fresh cut leaf and put it in the jar with the dry bud.. some people use fruit slices or orange peels or apple peels to help out as well.. only put whatever your going to use in the jar for an hour or so because if you leave it in for too long, it can cause other problems... once the buds re moisten, take out the whatever it was you used and toss it..