
Smell can be a way to detect danger. Smells are added to some gasses to be detectable. It would be helpful to smell the smoke if a fire started in your house. It’s a defense mechanism where we have a reaction to smells of things that are rotting and could be harmful to us. For survivals sake I’m surprised so many people picked that. And… you can tell a lot about a person by the way they smell. Good, or bad. I don’t want to be with someone who smells like a bag of rotting chicken.