Rhodinol is something that smells really nice, like flowers! It's actually a type of chemical that is found in different plants, like roses and lavender.
When you smell a flower that has rhodinol in it, your brain thinks it smells really good and makes you feel happy and calm. It's kind of like when you smell your favorite food cooking and it makes you really excited to eat it!
Sometimes people use rhodinol to make perfumes, candles, and other things that can make your room smell really good. It's like having a little piece of a garden right in your house!