It is a very annoying condition for me when I have flu and make me sneezing all the day.
Here is a little tips you can try at home. Very easy and helpful as I've tried.
● Take 5 glass of hot boiled water on a bowl.
● Add about 3 drops of Cajuput oil there.
● Grab a towel and cover all of your face above the bowl with hot water and cajuput oil.
● Take a very slow breathe while you sniff the aroma.
● Do it some times as you feel better but do not take a fast breathe because it's gonna be bad for your nose.
No medicine and very easy to do.
Hope it works with you too :)