Not really always, ive read a lot of omegaverse that has an alpha with a pheromone that smell good. You're probably just reading the very popular ones
For real! The omega always has a "soft smell" and I don't like the fact that the omega is always the one getting bitten and stuck for life. I need to read a story in which the omega is the doing the biting and it is the alpha who is stuck with their partner. Everything else can remain the same
Rec for me
I've read omegaverses novel version, it's the same thing... otherwise there's no particular scent
https://www.mangago.zone/read-manga/kiss_me_liar/
Omegas mark in this one-- but it's not a very green flag stoey. Read with caution
https://www.mangago.zone/read-manga/unromantic/
Omegas dominate the world in this one
Let me rant about the omegaverse. Why are alpha smells always heavy smells like musk or smoke or pine trees and omega smells are always honey or peach or oranges? Why can't I have a good-smelling alpha?! Like, have the scent of fresh winter air or mint or bread, but WHY MUSK EW