Not necessarily strange. I would have to say that most of the time, the smell is linked to the genetics of the plant. It may develop smell later on in flowering, but that is unlikely. It's also possible that after some curing you might get some smell, but only time will tell.

On a side note, is their any particular reason that you use superthrive in flowering? Most people I've run into stop because it is primarily a rooting additive and contains a high percentage of nitrogen. I wanted to know if you just never stopped using it, or if you know something that maybe I don't