go off
• (of a gun, bomb, or similar device) explode or fire.
• "the pistol suddenly went off"
• (of food or drink) begin to decompose and become inedible.
• "milk went off so quickly in hot weather"
Similar:
go bad,
go stale,
go sour,
turn,
spoil,
go rancid,
decompose,
go mouldy,
be rotten,
be past its sell-by date,
• begin to dislike something.
• "I went off chocolate when I was pregnant"
• go to sleep.
• "I went off as soon as my head hit the pillow"