Responses
It's different in other ones, depends on the author. I've read a few where family can't sense each others phenomenons. I honestly prefer those ones, cos the alternative is truly horrifying. I've noticed that some authors who have non-omegaverse works that contain implied incest or "soft" incest, tend to opt for the my alpha/omega sibling reacted to my rut/heat, storylines. Creepy to say the least.
Well now that a manga has addressed this I can finally bring this up without sounding so random but CAN YOU IMAGINE THE SHEER HORROR OF ACTUALLY LIVING IN AN OMEGAVERSE LIKE YOUR SIBLING CAN GO INTO HEAT AT ANY TIME AND YOU CANT FUCKING THINK DO YOU KNOW HOW FRAGILE SOCIETY WOULD BE THE SHEER IMPACT OF THAT FACT ALONE PURE CHILLS