I'm trying to make my own juice and all of my test samples are burning my nasal passages. I am letting them steep for a day or more. I tried 5% flavor and still got a burn. I made some juice with 0 flavor and there was 0 burn, but as soon as I put in flavor there is a irritating burn in my nasal passages. I am using precise measurements with juice me up calc. 50/50 blend with 12%nic. My flavors are Lorann and The Flavor Apprentice through Wizard Labs. Please advise