The Rice University Neologisms Database

an incredibly bad smell, a not quite indescribable stench, a smell somewhat less in degree than a dunst Since a dunst only happens once in a lifetime and defies any verbal explanation, this word is used to describe a smell of lesser degree. A FOID is still an incredibly bad smell; it is just quantifiable. This word was accidentally coined when someone mispronounced the word ‘void.’ The reason it took on this new meaning is that when the mispronunciation occurred, the speaker was discussing the concept of a dunst. The coiner of this word had the difficulty of describing an indescribable smell. Confronted with this paradox, they invented a new word as a sort of compromise. The word foid lacks the intensity of a dunst, but is a better choice for common usage because it describes a bad smell (as opposed to a singularly bad smell).