why would you want to transfer into soil? rockwool is one of the best (aside from hyrdoponics) ways to grow weed. it holds water, it keeps the roots aerated, dirt has bugs, mold, diseases, rootrot and a bunch of other things not good. and it's heavy and messy, too. I am growing in soil, I wish I could ge my hands on rockwool, I'd much rather use that.
As to smells, i am into my 5th day of flowering. the smell is like hay and sweet grassy pot mixed. to me it's nice, but I must use air fresheners at all times so the smell stays in check. It's not too bad, I have 19 plants in an unused basement closet. down here I could care less about the odor, but upstairs my roomies are complaining (?) of the smell, it is noticeable if you knowwhat to smell for there is a defininite lingering pot odor in the background). otherwise, it's just a sweet, grassy smell. in a room in an apartment, say, yeah you might need an ionizer or room deodorizer or something similar