I asked a similar question:
Angelika Maier wrote:I am a fan of smoking. It eats away odours. I use mainly artemisias.
Anne Miller wrote:Since some artemisias are poisonous which one do you use and how do you use it as smoke?
Tarragon (A. dracunculus) is a very popular edible herb so is this the one you use?
I spent several days trying to find
the answer. I found how to make incense, how to smoke herbs in place of tobacco, how to grow plants that clean the air and such.
DH is not a fan of candles so I only have them for emergencies and have never used them. That said, the only way I could figure out how to use herbs other than incense would be to put them in candles. This seems pointless as the candle itself would eliminate the odor.
I do know that some folks have a diffuser to use with essential oils and another method would be using a electric potpourri warmer.