There is no scientific evidence to support the theory that eating local honey or pollen will cure allergies. Practically speaking, most people's seasonal allergies are caused by airborne pollen from grass and ragweed, and those aren't the plants that honey bees are visiting. So it's unlikely that the pollen you're allergic to is the pollen you'll find in honey. What's more, some people can have allergic reactions to impurities in some honey. It's fine to eat honey if that's part of your diet, but adding honey as an allergy treatment doesn't have any scientific rationale behind it.