drink a hot beer.
take a steem bath (putting salt and boiling water into a bowl/bucket then ur head over the bowl and then a towel over your head like a tent to make you breath in the vapor). breath through ur nose and the snot will be dripping into the water clearing ur nose. also eating spicy food helps ur nose drip.
Ive done the hot water with eucalyptus oil to clear the nasals. I'm pretty clear now, just a cough.