Hi, welcome to the forum, one thing is certain that there is continued nasal irritation which is causing nasal sneezing. Sneezing is a protective mechanism which tries to drive the irritant out of the nasal passage.
The possibility in your case is any particulate or foreign body may be left inside which may be irritating the nasal passage. There are receptors present on the nasal lining which are activated leading to sneezing reflex.
Try nasal saline spray or irrigation which will help to alleviate your symptoms. The symptoms should disappear in few hours. If the irritation persists then you may need re evaluation of the nasal passage.
I suggest you to consult ENT specialist, if the symptoms persist. Take care and regards.
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