Fact #1 The human nose can smell over 1 trillion scents, according to researchers.
The nose smells with the olfactory cleft, which is the roof of the nasal cavity. It is right next to the “smelling” part of the brain, which consists of the olfactory bulb and fossa. This part of the nose has many nerve endings that carry smell sensations to the brain, according to the American Rhinologic Society.
Fact #2 Without the nose, the body wouldn’t be able to taste food nearly as well.
What humans call “taste” is actually a mixture of different sensations. One of the sensations is smell. When food is eaten, the nose smells the food and sends information to the mouth in a process called olfactory referral. This is why those with a cold or other nose condition finds that food lacks flavor. livescience.com
Fact #3 In the average adult it’s estimated that about 20,000 litres of air pass through the nose every day!
The nose is what processes this air constantly, doing an excellent job unless affected by the sinuses. The nose also filters particles entering the airways down to the tiniest size. It regulates the temperature of inhaled breath to match your internal thermometer. It also makes sure that moisture makes its way to the lining in your lungs so that they don’t get dry.
Fact #4 Smells can make you happy or sleepy
Aromatherapy uses essential oils, absolutes and infusions from flowers and plants to elicit a physical or mental response in patients. Depending on the properties of an oil the smell can travel along your olfactory nerve to trigger reactions like alertness, relaxation or even concentration in the brain. thesinusdoctor.com
Fact #5 Your nose helps you find a mate
It’s amazing how many of our body functions are directed toward sexual activity and reproduction. The nose plays a critical role in our perceptions of sex through the olfactory system. The sense of smell is a key component of how we identify people when we are close to them. The characteristic smell of a person’s perfume or cologne or the scent of their shampoo or soap may be important to sexual arousal. The smell of human perspiration has a direct effect on sexual receptors in the brain. Loss of smell correlates with decreased sexual drive. clevelandclinic.org
Humans release pheromones – a type of chemical released only in response to sexual attraction. Nasal grooves in nostrils are sites rich in pheromones. Human nose is capable of detecting pheromones of opposite sex. According to experts, it is the pheromones in nose that led to the birth of smooching or romantic kissing. factslegend.org
Fact #6 Men can smell ovulating women.
In fact, both sexes are capable of smelling major histocompatibility complexes that appear to be different from their own. This is very important because when a person smells a different MHC in opposite sex and mates, the resulting offspring is born with a stronger immune system. factslegend.org