Indigenous cultures in North America use sweetgrass to bring the sweetness in.  Grasses by nature are very grounding and relaxing.  They signal abundance of resources and connection  by growing together in such tight knit communities.  
Dried sweetgrass is often braided, bringing in the energy of the Trinity- connection to the Creator, our human experience and our spirit.
Hydrolats are a water based spray drawn from the water of the distillation of essential oils. The smell is much more subtle and it is primarily used to clear, infuse, and brighten your energy field with the essence.
A few “spritzes” protects the aura of a person or a room.