Perfumes/minor buff to leather armor

What is perfume?

 Essentially it works like hunting spray or a repellent because that's precisely what perfume does in reality. Certain things like certain smells, other things do not. I suppose it wouldn't have to be CALLED perfume, perhaps you could say " Lily of the Valley Essence" or something of that effect. Whatever you want to call it, basically some things smell good, others don't

How it works

If certain animals or hostile mobs liked one smell, for instance, let's say iron golems love poppies because they sometimes drop poppies, if you smell like one, if you get too close they will get distracted for a while and look at you for a few seconds. If you smell like a carrot, and Zombies like carrots, you could temporarily be seen as another zombie and they won't attack you. On the other hand, maybe creepers really hate Lilacs. If you smell like lilac, creepers will run away from you.

Just like in real life, you can't just go around mixing scents and expect to get the same result. Mixing scents ruins both scents. Don't do it. They can also be removed by swimming, or being hit by a splash water bottle

Leather armor, being an organic material, holds onto scents really really well. This means that just like how you can dye it, you can also make it smell a certain way and that scent will only be washed off if you wash it in a cauldron. Taking damage however risks getting a mobs funk all over you and ruining your scent.