Why some plants they show lower terphene profile respect what aspected?

if it had the "right" genetic, it wouldn't come out the way it did. Agitation and stress often increases smell... all that matters is how it smells at the end when dried and cured... don't assume things too early in process. Less smell can be a good thing early.

I've already experienced that the smell only comes at the end but if you run your finger along the trunk and sniff, you'll smell it..

There’s no smell at all? Are your plants flowering? You won’t get a strong smell till flowing starts. Many things can affect a grow, would need more information!