I have a strain right now that I know produces quality smoke, it is like 30 days into bud and it still has no odor. Some strains just dont smell much. On the other hand a strain I had a while back was stinking 50 yrds from the house. Had to buy a carbon filter for that one. Again it depends on strain and personally I think trace nutrients may also play a significant role. Using beastie blooms seemed to increase odor of a strain I grew with and without it. It made a difference.