3 handmade soya wax melt's made with 10% aromatherapy oils, giving 4 hrs fragrance, pop one in the top of an oil burner, just light an unscented tea light underneath. Safer to use than an open flame.
You can top up with your own oils. Also you can take the wax from the burner when it has reset, and change it for an scent.
For calming, euphoric, sedative.