Famously quoted from the 1971 movie Willy Wonka & the Chocolate Factory a schnozberry (snozberry) literally refers to the particulates (berries) that come from a nose (schnoz) i.e. boogers, snot-rockets, nostral-turds, funky junk from the face-trunk, etc.
Stan: Did you see the size of that nose?
Lou: He couldn't pick those schnozberries with a backhoe!
When you feel a slight restriction of your airway,causing you to make a deliberate ,yet somethow, subconcious effort to swallow your saliva hard. At which time you sense an amount of phlegm being foced down your esophagus, after this awakening of your "being" you feel hardened surfaces on said phlegm, reminding you of a raisin or stale gummybear. What you just ingested was a "schnozberry".
1979 disco dude ;"that was a freekin $20.00 schnozberry !