well from experince, so far my power plant isnt smelly at all, unless you rub the buds, then it smells faintly piney. But it is only about 3 weeks into flowering.
I used to have a small indoor setup in my closet and here is what I found out: Stay away from anything WW (AK47 is a descendent), Great White Shark stinks BAD, K2 is very odoriffic, and Skunk #1 has been known to have a distinct odor (hence the name). I found that Jack Herrer, Northern Lights, and Chronic dont smell as bad as most others.