ive had that once,the weed was all grounded up an shit and i bought an eighth, i thought it was shit cause it had no smell, but i was wrong 2 hits i was out..4 in heaven..6 paralytic on the floor with floydd in the background,

so i guess u shouldnt judge weed by its smell

However i did have a friend who got sum real dank smellin shit, but it took us like 10 hits to get high, so it must vary, so u can't always be sure...