Green’s Dictionary of Slang

kerchew! excl.

[onomat.]

an onomat. term indicating the sound of a sneeze.

C. Read A Fine Summer’s Day 🌐 I can smell you and you have a very strange odor. . . . musty and, and, KERCHEW there you’ve gone and made me sneeze. It seems that I am allergic to your kind of bug.
J. Schultz ‘A Discussion of Wine Tasting Terms in Illustration and Parody’, Oxford Wine Room 🌐 ‘Peppery’. Hot, tart pepper on the nose (kerchew!) and palate.