Some people must have so much better noses than I. Blueberries or cherries, fuel or chem, bubble gum or lemon and on and on. About as far as I get is hashy skunky maybe pine. But all these subtle nuances make me feel ignorant or something.
Most of the time when I open a jar I am hit with a strong and strangely familiar aroma that is just beyond my ability to remember or describe it. Very dejevu evoking. Maybe my nose isn't all that good, seems plenty big and I have been called "Nosey" though.
keep growing it, you will get there... I have very bad sense of smell, trust me, when someone says grapefruit weed, its undeniably grapefruity, it doesnt mean all the plants will smell grapefruity but the right phenos will be outstanding undeniable grapefruit smell... another thing you can do is switch to organic if you have not done already, it really helps bring more terps, the other thing is dry and cure but generally, you ll know as you chop the plant...
I ve grown so many plants from seeds from so many different strains and it is true often time it just smells like weed, hash ... but there a lot of phenos and varieties that have amazing fruity smell, anyone smelling the good ones will be able to tell without a doubt, if the smell is subtle, keep searching.
So far, over the years, I have found plants smelling all kinds of smell I had never smelled before but also I have had a lot of fuelly, dieselly, banana, blueberry, a lot of coffee smelling/tasting strains, mango, pineapple, pina-collada, anise, pine, lemon, grapefruit... I am still on the hunt for a strawberry smelly strain, a more piney, a more lemony... I think I have had some of the closest to grapefruit as you can get... it's really endless, what I like though is every once in a while you get those strains that smell so good but you can't tell what they smell like.
have fun.