Yes. This is normal, although it shouldnt completely loose its weed smell.

The weed smell is that of the trichomes, and as the plant grows, the trichomes grow, therefore meaning they are not crystalls yet, they are small mushrooms containing oils.

As they dry, they go hard.

Once the buds are dry, and the stem can be snapped easily, you can start to cure them.

*Make sure the buds dry, you dont want it molding.*

During the curing process you break down the chlorophyl and other chemicals what give it the planty smell.

The weed smell will come back, more potent, and it'll taste better, smoke better, and it'll be alot smoother.

The key is patience my friend.

Also, curing activates more THC so cured bud is way more potent than fresh bud.