I cannot eat certain ingredients due to allergies so I have my slurpuff take a sniff of them so I know I won’t get sick. When they do have ingredients inside that I can’t eat she eats them! This has become an expensive habit, how do I get her to stop?

Well, to be fair, your slurpuff is attempting to remove the dish so you don’t eat it at all. As you likely know, certain food allergies carry a risk of cross-contamination, meaning you may get sick from attempting to salvage the meal and eating around the ingredients. (This is especially true for nut allergies, due to the fact that many nuts have oils that may contaminate otherwise safe food.) So you will likely encounter some expense with handling food you’re allergic to either way, and if your slurpuff eats only the foods you can’t eat, it’s likely it’s operating under that assumption. Of course, it’s true that you’re likely referring to situations in which you’re eating out and can therefore ask a waiter to take back a dish and remake it free of charge; it’s just that it’s worth it to understand the reasoning behind your slurpuff’s habit. 

That having been said, you may wish to switch to a growlithe, which, due to their extreme loyalty, will not eat anything unless it has express permission to eat it. Alternatively, considering the fact that you have a medical condition, you could possibly apply for a pokémon trained specifically to sniff for allergens.

If, however, you wish to continue using your slurpuff, it’s important to teach her to heel. When at home, set out a dish of her own food and train her to wait before eating it. Show her a treat as an incentive to wait. If she waits (that is, if she sits perfectly still, not if she goes for your hand instead), give her a treat. If she moves towards your hand or the dish, put the treat away. Eventually, she’ll associate waiting with rewards, so she’ll be easier to train to sniff out allergens. In order to do this, have her heel beside you and let her sniff the dish. If she tries to eat your food, have her stop and heel. If she listens to you, give her a treat and send back the dish that would have made you sick. Teach her to place a paw on your arm or give you some other signal that will let you know that the dish is dangerous without taking it for herself, and make it clear to her that she doesn’t have to get rid of the dish herself.

Also, be consistent with your training. If you allow her to sniff your food as you go grocery shopping or whenever you cook at home, don’t let her “dispose” of the food herself. Train her that it’s okay to send back the food or discard it some other way. If you’re consistent with what you teach her, she’ll be more likely to recall the lessons she’s learned when you take her with you to restaurants.