Geraniums are valued in the perfume industry for their floral scent. Inhaling Geranium oil’s sweet aroma can support emotions by creating a calming and grounding effect. Probably the most famous scent linked to sweet dreams is lavender. You may have heard that breathing in the smell of lavender makes you drowsy; turns out, it's true. Research shows the scent lowers heart rate and blood pressure, putting you in a relaxed state. The combination of the two creates a very nice healthy bath salt.