In a small saucepan add water till it is 3/4ths full. Add a halved orange. Add cinnamon, vanilla extract, nutmeg, and sugar. Bring to a boil then simmer on low throughout the day for a wonderful smell
Tips: You can add other fragrant spices such as cloves as well. Use what you have on hand. Opt for cheap imitation vanilla that won't be missed. I did not eat my orange because it was pretty old but
Eating the inside and using the peels works just as well. Every few hours check the water level and add more when it's low. Mine has lasted a day and a half before I had to add more cinnamon.