Fortnite 4.0.0 patch brought a new cosmetic type in the form of graffiti. They are a little different from the emotions you may be used to. Instead of briefly ejecting into the air, they will spray onto whatever surface you are currently aiming at. Check out the full list of Fortnite atomizers and a quick guide to using them!
HOW TO USE GRAFFITI
If you have used any emotions or dances in the past, then applying graffiti will not be difficult for you. Go ahead and install one of the atomizers in your slots. Once in the game, go ahead and press the following key depending on your platform: PC: B key, XBox: down on D-Pad (directional pad), Playstation: down on D-Pad (directional pad). If you only have one emote, it will automatically play when you press a key. If you have more than one option, you will direct the arrow to the element you want.
Sprays can be sprayed onto any surface, depending on where you are aiming. You can spray them on floors, walls or ceilings!