When I have to blow my nose, which is often every 5 minutes, but I sometimes go without for up to 45 minutes, I've found something interesting.
If I don't use a Kleenex, I'll hurl snot out of my unblocked nostril maybe distances of 2-4 feet and it really gets my sinuses clear (for the next 5 minutes).
But when I use a Kleenex, I sort of react like both nostrils are being blocked, and I don't clear my head as well.
Also I hate it when people suck in their snot.
My mom taught me that I have to expel that stuff out of my head. If you don't, it's not going anywhere. You'll get terrible migrain headaches as that stuff starts to collect up there, or it will drip down your throat and you'll feel and talk like you smoke a pack every hour. Where else do you think your snot goes if you don't blow your nose?
But do you think you feel better too when you shoot snot for distance?