I don’t think I’ve ever been diagnosed other than the fact that I can smell things others can’t. I can smell when people are sick. Cancer has a smell. I sometimes I encounter people and don’t know what the smell is but know they are sick. I can smell cockroaches in a house. Even if you can’t see them I can smell them in the walls. All in all I would choose to have just a regular sense of smell since many perfumes and those damned plug in air freshener just smell like noxious chemicals to me. Its just like walking in a room and someone is screaming. Only I’m the only one there that can hear it. Not fun.