2,430. Which Non-Kosher Food to Use in an Emergency
Maachalos Assuros 14:15
If a sick person smells a food that contains vinegar or a similar ingredient that stimulates a person to crave it, the procedure is the same as that for a pregnant woman, as described in the previous halacha.
Maachalos Assuros 14:16
If a person is literally famished, he may be fed non-kosher food right away until his vision clears. We don’t wait for kosher food; rather, we rush to feed him whatever’s on hand. We feed him things of lesser prohibitions first and if his vision clears, that’s enough. If such is not the case, then we feed him things forbidden by more serious prohibitions.