I recognize prefer a real moron to be fair with you all. I had been having serious dust sensitivities at certain times of the afternoon for months, and I never could figure it out as to what was causing them until now! It turns out because I have a single of those outdated oil furnaces, the furnace filter needs to be changed out more often than regular central heating, ventilation as well as A/C filters.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 condo making my dust sensitivities act up. It is consistently in the early evening when it starts to happen, and that is about the time that the furnace constantly kicks on! I found this out by the furnace not coming on at that time on a afternoon it was a little sizzling outside. I then mentioned it to my friend and they told me that I should change my furnace filter and that was very the issue. I said I just changed it a few months ago, and they laughed at me and told me about the outdated oil heating systems needed to have their filter changed out at least once a month!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 immediately ran down to the basement in my house and had the oil furnace filter substituted. The very next night when it came on again, would you assume it? I had really no dust sensitivity problems whatsoever! I really felt prefer a true dunce after that!