fluey

As adjectives the difference between fluey and flukey

is that fluey is downy; fluffy while flukey is lucky.

As adjectives the difference between cluey and fluey

is that cluey is savvy; street-smart; in the know while fluey is downy; fluffy.

As adjectives the difference between fluey and gluey

is that fluey is downy; fluffy while gluey is viscous and adhesive, as glue.

As a noun flue

is a pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace).

As an adjective fluey is

downy; fluffy.