I have allergies, as in I test into the top 98% of allergy sufferers, and I live in Kentucky, known for pollen, animals, molds, fungi, etc. If it makes allergies go insane we have it. I know people that have moved to Kentucky and only discover then that they have seasonal allergies.
Fortunately, I also have a good allergist. I take two allergy shots (one in each arm) a week, use Nasacort CQ nasal spray every 12 hours, and take one Zyrtec a day. Unless I forget one of the ingredients in my cocktail I rarely have more than a sniffle.
I also have a large HEPA air filtration unit running in my house 24/7.