Don't waste your essential oils
Here's a pro-tip: when I finish an aromatherapy session and it's time to clean out my diffuser, I dump whatever water and essential oils remain in the diffuser into the toilet bowl. It acts as a very mild aromatherapy for the bathroom and because essential oils tend to spread across the surface of water, it suppresses any odors that might come from the bowl. Also, many essential oils have antibacterial or antiviral properties so it works as a no scrub disinfectant too. So, use this tip to make your oils do double duty; don't just poor them down the drain.