Nose Candy Meaning

Example : 1999, Les Roberts, A Shoot in Cleveland, ISBN 9780312966942, p. 1:  Except for the nose candy, I'm addicted to all of them, to a greater or lesser degree.2002, Joe Babcock, The Tragedy Of Miss Geneva Flowers, ISBN 9780972048408, p. 142:  I told him that it just tasted sort of sugary and fizzy, like Pop Rocks for your nose, and he said, "Hence the name nose-candy, baby!"