Bummer. Hope you feel better soon.
I would recommend neti pot with warm saline water---- basically pouring warm saline solution in both nostrils ...
you can just use a glass and some non-iodized salt mixed in warm water.
More information here 👇
https://yogawithlois.com/nasal-irrigation-neti-pot-clears-sinuses-and-steadies-the-mind/.