Don't Try To Stop The Sneeze [Thummu].

Although a sneeze is completely controllable, it is generally helpful to give the body a chance to clear irritants clearly to avoid potential complications. When suppressing a sneeze, the accumulated stress and air can be further redirected into the middle ear, Eustachian tube, or sinuses, which can lead to unlimited consequences:

Middle Ear Problems: Redirection The stress caused by sneezing leads to long-term strain on the middle ear which may cause ear pain, eardrum damage, or may alert you to problems. 

Sinus Problems: Stifling a sneeze can sometimes cause tension to build up in the sinuses, which can lead to sinus pain, sinusitis, or other sinus problems.  

Eustachian tube dysfunction: In many cases, forcible prevention of sneezing can disrupt the function of the Eustachian tube, which connects the middle ear to the lower part of the nose and allows the ear to change. A malfunction of this tube can lead to problems such as ear pain, difficulty paying attention, or a feeling of fullness in the ear. Possible 

Injury: Trying to forcibly stop sneezing can also lead to some problems, including muscle strain, ruptured blood vessels, or perhaps a small tear in the lining of the nose or throat. 

It is important that your body can clear irritants clearly when you sneeze to prevent any potential problems or discomfort. If you need to suppress sneezing because you are in a quiet environment or with company, you should do so carefully and not just with excessive effort to reduce the risk of side effects.