Green’s Dictionary of Slang

scald v.¹

to infect with venereal disease.

c.1608		Shakespeare Timon of Athens II ii: She’s [i.e. a whore] e’en setting on water to scald such chickens as you are. [Ibid.] III i: May these add to the number that may scald thee! Let molten coin be thy damnation, Thou disease of a friend.
1612		J. Taylor Laugh and Be Fat 23: If French, or Venice Puncks had fir’d or scald thee, This man had neuer raw-bon’d Coriat cald thee.
1631		Massinger Believe as you Liste 213: Behold here lyes a scalded pate quite bare, In catching conies, who lost many a hare.
c.1660		C. Cotton Valiant Knight 12: To one Don Fabro then he marches, Showing him what he got i’ th’ Arches, While scalded Pego linen starches.
1667		St Serfe Tarugo’s Wiles V ii: I have heard some scalded Corridans make grevous groans for the warm enjoyments they had from the Nimphs that ply the Parks in the Upper-Holbornia.
1697		J. Dunton Night-Walker Feb. 2: [He] had been in Company with a lewd Woman, who had Scalded him.

In compounds

scalding-house (n.)

a brothel.

a.1627		Middleton & Rowley Old Law (1656) III ii: My three court codlings that look parboil’d, As if they came from Cupid’s scalding-house.
1984		Partridge DSUE (8th edn) 1015/2: late C.16–17.