There are plants that help keep some bugs away, naturally. I think you need to be standing in a entire field of those plants for that to work though.
Get a couple purple martin houses going. It's also mostly a myth they eat a lot of mosquitos, but they're still fun to watch. They'll swoop at you, making you think you're in danger of being attacked by birds, but really they're just eating the cloud of bugs around you. That's how it works. The human disturbs the bugs and the birds come and eat them. And bird shit is good fertilizer as well. Isn't nature wonderful.