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Your problem seems to be a lealing of cerebrospinal fluid
or a Chronic sinusitis
In CSF rhinorhea there is a rent in the cribriform bone and overlying mucosa and the brain fluid leaks now and then. It can lead to serious meningitis
Chronic sinusitis as such is an indication to see a doctor.
So it is worthwhile to get yourself assessed and investigated and treated as soon as possible.