I don't eat snails, but for those of you who do, cook them first.

Humans become accidental hosts in various ways. They may eat undercooked snails or inadvertently eat an infected slug or snail hiding in their unwashed salad. Infected snails and slugs can also be eaten by other animals first, like frogs, prawns, shrimp, or freshwater crabs. If humans then eat those animals before fully cooking them, they can become infected.

Cook your food, and this will not be a problem for you. Cooking is a method of food preparation unique to human beings. None of the other lifeforms on this planet cook like we do.