Slate has a piece on the history of vibrators in which they use the cited phrase in the following
From the 1950s through the 1970s, the vibrator became what academics like to call a camouflaged technology. Mail-order catalogs full of household tchotchkes featured beautiful women with long, silky hair loosening their tight shoulder muscles with banana-shaped vibrators. Also popular were vibrators that doubled as nail-buffer kits, hair brushes, backscratchers, and some that were designed as attachments for vacuum cleaners.
Google likes to drop the letter “d” at the end of camouflaged.
but there is this “nl” page which offer something about the fermette a ‘farm-style house’ which seems rural, but actually is no such thing.
But the Slate piece seems to suggest that the item is camouflaged in a way that disguises its real purpose.
Is there agreement about this term? It seems useful, but I don’t have clarity about its definition.
edit: most of the uses of this term are about either the fermette or vibrators.