You can get a feel of it by being around a lot of fragrances. You know the people who are noseblind so wear a lot of perfume/cologne. They putting on fragrances in their lotions or other stuff. Their house and/or car reeks but they barely notice. Same feel and they don’t even notice the smell, it normal to them. Their kids and pets are getting sick and they don’t care. I forgot to add that you are considering the problem if you bring it up.