Since there are two unique varieties of chamomile, you’ll find their aromas also vary. German (Blue) chamomile, Matricaria recutita, has an herbaceous fragrance that is sweet, fruity, strong, and rich, while Roman chamomile, Anthemis nobilis / Chamaemelum nobile, smells like fresh apples.
Digestive essential oils promote proper digestion, and can help to ease upset stomachs.
Marjoram has a spicy, herbal, slightly camphoraceous aroma.
Black pepper has a warm, spicy, peppery aroma, very much like sniffing your pepper grinder! However, the essential oil is more woody than the fragrance of freshly ground pepper, and may be a bit more earthy as well.
Rosemary essential oil has a slightly medicinal smell somewhat like camphor. Depending on the variety, it can be reminiscently herbaceous like pine trees, woody, or even minty.
Tulsi essential oil has an herbal, spicy aroma, like a cross between sweet basil and clove.
Celery seed essential oil has a warm, fresh, slightly spicy aroma.
Cardamom essential oil has an exotic, sweet, spicy aroma which will be familiar to those who use green cardamom in the kitchen. It is a complex scent and unique in combining a spicy scent with a fresh, green, almost soapy quality.
Star anise essential oil has a warm, spicy, sweet licorice aroma.
Allspice essential oil has a spicy, sweet, warm aroma, like a combination of nutmeg, cinnamon, and cloves.
Yarrow essential oil has a warm, sweet, fresh herbal aroma.