Why people sneezing?

Answer 1

Sneezing is the body's attempt to remove blockages, germs, antigens and irritants from the nasal passage. Your nose is the air filter for your body. Almost all the tiny bits of dust and dirt we breath in through our nose are filtered out so the air is clean going into our lungs. The tiny particles are either stopped by the hairs in our nostrils or get stuck in the mucus in our nasal passages. When the lining of our nose gets irritated by these particles, we feel a tickle in our nose, triggering a sneeze. During a normal sneeze, we take in a big breath, then expel the air very forcefully out through our nose and mouth, hopefully expelling the offending particle from our airways. Some people sneeze more frequently because they have Allergies. When people have Allergies their noses are more sensitive to specific irritants such as pollen, (especially at Spring when the flowers are blooming). When people have a cold their noses are more sensitive and thus more easily irritated.
We sneeze because something is irritating our nasal or respiratory membranes. It can be foreign particles (like ground black pepper), pollen, dust, etc. We also can sneeze due to irritation and drainage from the mucous membranes, like happens with a cold or the flu. It is an important reflex action to remove an irritant and to keep our air passages open and free of obstructions. We sneeze as a response to the irritation of the lining of the nose. Most scientists

think that we do that because of sun rays. There is another reason that scientists think but know one knows for sure.
A sneeze is a semi-autonomous, convulsive expulsion of air from the lungs through the nose and mouth due to irritation of the upper respiratory system and tissues. It is most commonly caused by foreign particles (dust, pepper, pollen) irritating the nasal mucosa. It can also be caused by irritation of the tissue from a viral (cold/flu) or bacterial infection (sinusitis), or from pollution, smoke or fumes. Sneezing can further be triggered through sudden exposure to bright light and even a full stomach.
Your alergies
because there is a fly up there obv
Due to the nerve endings of the mucous membranes being irritated or stimulated
First of all I hope you're never stopping a sneeze in progress. Sternulation (sneezing) is a major deal for the body. Did you know that a typical sneeze removes air from your body at speeds of up to 100 mph. It's a tremendous velocity that can cause serious injury if incorrectly stifled. The force of the average sneeze, if prevented from the body, can eventually cause hearing loss and damage of blood vessels in your head. Several things can cause a sneeze. 1. The nerve endings in the nose get irritated and with a blast of air, the nose is swept clean of particles and bacteria. To help with frequent bouts of sneezing, blow your nose frequently. Your nose is an air purifier, keep the vents clean. 2. Sunlight can cause the nerve endings to get irritated. When you feel a sneeze coming on look at the darkest place around you. 3. Many sneezes are psychosomatic reactions to disquieting emotions or thoughts. Press the top of your upper lip with a finger to try and calm a sneeze. Tickle the roof of your mouth with the tip of your tongue and wiggle your ear lobe gently, it is proven to work so give it a try. Hope you the best!!

Sneezing or sternutation, that quick blast of air out the nose and mouth, has many causes, but generally, it's the body's attempt to get rid of some material in the nasal passages. Often, people know what the source is: they may have runny noses from colds or flus, for example, which cause the mucous membranes in the sinus passages to become irritated. The body responds by attempting to clear these passages, causing an individual to sneeze.

At other times, allergies to pollens, dust, or molds cause sneezing. The nose, which is acting as a filtration device, works to remove these allergens from the body by expelling them. Since allergies entering the nose are often made up of tiny particles, it may take multiple attempts to do the trick of removing irritants. Furthermore, provided that the person remains in an environment with the offending allergens, she is likely to keep sneezing periodically.

Sometimes, cures for sneezing from allergies bring on larger ones. Using corticosteroid nasal sprays, for instance, can bring on a bout of sneezing. Again, the nose reacts at the introduction of a foreign agent, even if it is beneficial, and attempts to get rid of it. The nasal passages will also note the presence of irritating foreign agents that get in the nose, like pepper and certain other species. Some people also sneeze after swimming for a while.