Besides being used up or stripped, how else can cold gas fuel be removed from a galaxy?
Answer
Blown out by feedback from supernovae or active black holes.
Energetic feedback resulting from supernovae explosions or the activity of central supermassive black holes can effectively blow required cold gas fuel out of the galactic system.

#Videos
NASA finds dead spiral galaxy - YouTube
JWST Finds a Bizarre Galaxy In Early Universe That Appears Dead
Related Questions
What does it mean for a galaxy to be referred to as "dead"?What color does a galaxy predominantly exhibit after star formation ceases?What material primarily fuels the ongoing synthesis of new stars in a living galaxy?What significant observation did the Hubble Space Telescope make regarding dead galaxy morphology?How far back in cosmic history has the JWST pushed the observation of quenched galaxies?Which mechanism describes cold gas fuel removal via interaction with surrounding hotter gas?What aspect of a dead disk galaxy can stubbornly persist even after star formation physics ceases?What do the puzzles surrounding ancient dead galaxies suggest about the early universe?Besides being used up or stripped, how else can cold gas fuel be removed from a galaxy?What is the primary implication of a galaxy achieving massive size before ceasing star formation within the first billion years?According to the classification table, what morphological effect is expected from a Quenching Mechanism caused by a Violent Merger?