Apart from being a mechanical purifier, the nose is also an immunological barrier for antigens (substances causing allergies). Olfactory senses are also located within the nose, detecting different smells from all around us. Olfactory senses transfer the stimulants through the olfactory fibres towards the olfactory nerve which forwards the information to the olfactory centre in the brain. We can thus smell harmful chemicals, gas, spoiled food, but also enjoy the fragrance of food, flowers, etc.
The nasal cavities also take part in the creation of sound while speaking and singing. It means that singers, actors, announcers and people using their voice for professional purposes must take additional care about the health of not only their vocal cords, but their nose as well. It is recommended to avoid areas with a lot of smoke and no ventilation, dry air, chemicals, dust, etc. They could use the everyday care treatment with a seawater solution, Aqua Maris nose spray, since that is the most natural way of cleaning and moistening the nasal mucus membrane.