I have not been sneezing since 3 months and made me insane when I want to sneeze but cant end it with CHOO. I tried all tricks including Doctors who made me more scary and been told to be scanned by X ray into my chest but I refused to do it because I know its funny thing and not serious. Finally after worrying time I reached to the answers, the causes can be varying, I will summarize them to you:
1- Too much Gas bloating into your chest and stomach which lead to shorting breathing which affects the process of sneezing. This should work by mixing yogurt with cucumber with a bit warm water and salt.. It works for me by diminishing the gas and acid into my chest and stomach particularly during the dinner.
2- Drinking a lot of PEPSI cola which also works for me by displacing the air into the body.
3- jogging and walking is important by increasing the air entry and oxygen.
Other causes of diminished sneezing are dry conditions which dry the sinuses into the nose leading to drying mucus membranes. This should work by drinking a lot of water, steam showers and using moisturizer in the room.
If the symptoms did not disappear within 10 days ask doctors