Mucus.
nose hairs
the septum
Tiny hairs that trap pathogens is the best definition of cilia. Cilia are hair-like structures that line the respiratory tract and help trap and remove pathogens and particles from the airways to protect the body from infection.
Your nose has this sticky stuff coating the inside of it. when you breath in through your nose all of the bacteria, dirt, and chemicals you inhale stick to the substance and it forms a bugger.
The goblet cells in the respiratory epithelium produce mucus, while ciliated cells have cilia that help waft the mucus towards the mouth and nose, aiding in the clearance of debris and pathogens from the airways.
mucus
infleunzae virus
it is water
That would be you immune system triggering your mucus membranes to expel pathogens in your nose out of your nose with your snot.
like kulangot\\\?
boggies
Mucus in the nose traps incoming particles like dust and bacteria, preventing them from entering the respiratory system. In the windpipe, mucus helps to trap and remove harmful substances that are breathed in, protecting the lungs from infection and irritation. The mucus also contains enzymes and antibodies that help to neutralize and eliminate pathogens.