Demeter Petrichor Cologne Spray (Unisex) By Demeter 4 ozDemeter Petrichor Cologne by Demeter, If the smell of fresh rain captivates you, demeter petrichor is the ideal fragrance to add to your collection. In true demeter fashion, this enchanting aroma uses a simple combination of dry soil and rainwater scent notes to create a long lasting fragrance that is suitable for any occasion and can be worn throughout the year. Demeter is an american fragrance company that specializes in developing nostalgic scents.