halitophobia
n.— «At the organization’s recent global conference, halitophobia—also known as delusional halitosis or imagined bad breath—was identified as a vital area for future mouth malodour research.» —“Bad breath? Forget gum, you might need a shrink” by Misty Harris Times Colonist (Victoria, British Columbia, Canada) Oct. 11, 2007. (source: Double-Tongued Dictionary)
Further reading
Trombonist Benjamin Jacobs-El, who toured with jazz great Lionel Hampton, calls from Huntsville, Alabama, to say that Hampton regularly addressed friends and band members as gate, as in Hey, gates, how’re you doing? Is that because good jazz swings...
Abishek in Gaffney, South Carolina, found himself using the word Tetrising to refer to trying to pack a lot of small items into a moving van, based on the video game Tetris, in which players try to make various combinations of squares all fit...