Green’s Dictionary of Slang

1. (US Und.) of a scheme or plan, to go wrong, to misfire.

1940		D. Maurer Big Con 217: When he is broke or when the fix ‘curdles’. [Ibid.] 245: The fix ‘soured’ [...] and the government indicted all the ropers.
1992		G.P. Pelecanos Firing Offense 206: ‘[T]he Kotekna VCR deal that got soured up in Washington’.

2. (US) to irritate, to cause annoyance.

1941		Life 27 Jan. 78: ‘It curdles me’ = I loathe it [W&F].
1943		‘Whitman College Sl.’ in AS XVIII:2 Apr. 155/1: that curdles me. ‘That annoys me very much.’.