Sneezing can reach speeds of up to 160 km / h and we should not retain this process because then the organism cleanses the body of all the impurities and by retaining this process we are bringing our body in danger.
While we sneeze, the air flies through our nostrils at speeds up to 160 kilometers per hour, therefore if you retain this process, or simply said, if you stop the sneezing, all this pressure will move to another part of the body, that could easily get hurt. Stopping or constraint the sneezing, will make, all the pressure, move to your ears, and this pressure can easily cause damage to your ears, for example, cracking your eardrums.
It can also cause hearing loss and dizziness, which will not stop for a while. The blood capillaries in your eyes can also get hurt. In other words due to this kind of pressure they can burst. This pressure can also damage the diaphragm. By stopping a stronger gust of sneezes you are risking a potential neck injuries, as well as fresh wounds in people who had recently operated their sinuses.
In the worst case, retaining of this process can lead to rupture of the veins in the brain and it can even lead to a stroke, which can be fatal.
So if you come to sneeze in public, do not be shy, because the price that you can pay is not worth it. Instead of restraint it, put a handkerchief to your nose and sneeze”like a man”. If you can’t take out your handkerchief, you can cover your nose and mouth with your forearm or your left palm,and that way you will be able to handle it later if necessary.