My very healthy DS age 7 is never properly ill, but constantly sniffing and a bit mucusy. He has that horrible cattarhy smell (tmi, sorry) and just sniffs and sniffs and sniffs! Plus he's always wiping nose on sleeve/hand/blanket. When he blows his nose there isn't much discharge - yet still he sniffs! It's as though he's permamently starting a cold that never develops. Seems so trivial to see GP about. Anyone got similar/found an answer?