I like mixing some vanilla extract with water in a spray bottle for a sweet vanilla scent. You can add a little spices to it if you like. Another good one is lemon juice mixed with water in a spray bottle to give your home a lemon fresh smell. Take whatever scent you like, find it in a juice or extract and add a little to a spray bottle of water. This way you can create a nice scent in your home that is just as strong as you want, without exposing you and your family to harmful chemicals. To kill odors in your home you can put baking soda in pretty bowls and put them throughout your home. I don't recommend putting baking soda and water in a spray bottle to spray in the air in home, because when I tried it everything got covered with white spots. It would be a good thing to spray fabric furniture with to take out smells, but not just up in the air. I had spots all over my tables, my floors, my my furniture and all my things I had in the rooms I sprayed. Not fun. I also don't recommend adding food coloring to sprays either, food coloring stains and what you spray up must come down....on your furniture and carpet. I do recommend getting a pretty spray bottle that isn't clear so the color of your mix doesn't matter because no one can see it. That way you avoid turning your home permanent colors!
You can even make ornaments with them by wrapping pretty ribbon around them after you're done putting in the cloves, you can add a nice bow if you like, and hanging them on the tree.