Green’s Dictionary of Slang

used with a variety of nouns, e.g. blush-making, hot-making [i.e. embarrassing], shy-making, sick-making, sometimes prefixed by ‘too’.

1930		E. Waugh Vile Bodies 58: Suddenly the door opened and in came a sort of dancing Hottentot woman half-naked. It just said, ‘Oh, how shy-making,’ and then disappeared.
1931		Sun. Times 22 Feb. 4/1: This, to use the current phrase, hot-making play .
1948		K. Williams Diaries 3 Feb. 21: It was terribly happy-making, so I typed him two airmails in reply. [Ibid.] 26 Apr. 28: All very exciting and mob hysteria-making.
1958		B. Nichols Sweet and Twenties 34: How was it that Queen Marie delivered such hot-making effusions? [OED].