RE: old powder?
I believe the smell was best described as chicken manure to me . I haven't run across any to say for sure . As for the primers shoot them up unless they're mixed in a can box and are unidentifiable . Then unofficially I would hose them down in WD in a zip lock and if possible hand carry to a land fill or animal pit or in a post hole they may dry out and become viable but if buried time and moisture will break them down to inert .