No smell from trainwreck plant

Can any one help put my mind at rest as this is only my second attempt at growing, and my first at growing trainwreck
im growing 1 trainwreck plant which is just into its 3rd week of flowering using a 250w HPS bulb and am growing in doors, the plant looks healthy plenty of flowers but there is absolutely no smell coming from it, is this good bad or normal i would be grateful of any advice

Just give it some more time. Soon it will smell up the whole place!

I have 4 Northern Light plants, no smell what so ever, but im positive when I flip to 12/12 tonight they will become stinky soon enough

Im excited for the smell.
lets me know Im doing something right