You can drink Lemon Juice because lemon juice contains vitamin C which can be very useful in getting rid of sinus. Also Lemon Juice can be mixed in with water while you drink it to get rid of some different types of sinus infection.
Also, you can take a steam to get rid of a sinus because steam becomes helpful to get rid of bacterial infection. Steam can help you to get rid of close nose and help you to breath better.
Everyone knows that garlics smell, but if you have a sinus infection, you can not be able to smell it better. Garlic can be helpful to fight with this type of infection and also help to get rid of different types of bacteria.