I feel like a real moron to be honest with you all. I had been having serious allergies at certain times of the day for months, and I never could figure it out as to what was causing them until now! It turns out because I have one of those old oil furnaces, the furnace filter needs to be changed out more often than common central heating and air conditioning filters. I had not changed out my furnace filter in 4 months, which was my whole problem! The furnace filter has been sending bad air quality through my entire house making my allergies act up. It is always in the early evening when it starts to happen, and that is about the time that the furnace always kicks on! I found this out by the furnace not coming on at that time on a day it was a little warm outside. I then mentioned it to my neighbor and they told me that I should change my furnace filter and that was probably the issue. I said I just changed it a few months ago, and they laughed at me and told me about the old oil furnaces needed to have their filter changed out at least once a month! At that point it all began to make perfect sense to me! I right away ran down to the basement in my home and had the oil furnace filter replaced. The very next night when it came on again, would you believe it? I had absolutely no allergy problems whatsoever! I really felt like a true dunce after that!