wouldn't worry to much about it. The smell is very strain dependant, and can take some time to accumulate. Dank smell doesn't always translate into dank bud!
oh know 3rd week of flower and no smell.. sounds like ya got hemp.. no tch. maybe there dying of some funk or something...
just giving ya a hard time...if ya had alot of smell out of them in third week you would probably have a male..
your girls arent really goingto have a strong odor till mor trichs come out to swell up and the lights warm up the room..
then you will be wishing that they didnt smell so strong