Depends.....

Snakes refuse to eat for a variety of reasons - sickness, improper temperatures, stress or normal lack of appetite. In these scenarios, scenting a food item with chicken broth probably won't help.

Some animals go through a period of time when they develop food preferences. My Stimson's male went through a period when he would only eat rats, then large mice, then chicks, then back to rats again. Oftentimes re-scenting does nothing but simulates feeding a different food item. Therefore in that regard - it works.

I have heard people say that boids go crazy for the scent of poultry - however only one of my boids has ever showed any interest in chicks or quail. The caveat to that statement is that he is a blackheaded python who is a garbage disposal and has never turned down a meal.

In other words, my experience is that out of my 14 boids, only two of mine will touch fowl. Out of those two, one of them will also regularly turn his nose up at them two.

I have found that braining the prey item and keeping it sufficiently warm achieves excellent results for animals refusing to feed for apparent scenting issues.