A perforation in the nasal septum
is very troublesome.
And yours is present for last 25 years !
This longstanding perforation has probably led to rhino-sinusitis too.
Use nasal douching with normal saline.
Keep your nose moist with liquid paraffin
Get a total and differential count of blood done, and an X-ray of paranasal sinuses
Avoid cold foods.
Drink plenty of water.
Take warm saline gargle.
Take a mucolytic-bronchodilator
The best treatment for septal perforation is to go for a surgery to obliterate it using a septal button.
It will definitely solve your problem.
Take your reports and consult an ENT Specialist
Take care. Holes are meant to be filled up( hahaha...).