When I go to any kind of indoor event I am always conscious of the heating and cooling system and whether or not the place seems to have good indoor air quality.
Well, this morning I was invited to a prayer breakfast and talk, and there were about 60 people there. When you have a number of people in one small room, it is mandatory that you have good indoor air quality. That means that you need to have a good strong HVAC unit that has a good whole room humidifier or dehumidifier, depending on the need, and also good AC air filters that will filter out bad things and allow good things to stay in the air. Some contaminants always manage to get through if you buy cheap AC air vents, therefore I always recommend getting the best AC air filters you can. In the last several years, a growing body of scientific evidence has indicated that the air inside buildings can be more polluted than the outdoor air, plus most of the people in this country are always inside! Not only that, but those who can least afford to be affected are the people who are almost never outdoors – young people, the elderly, and the chronically ill, and people with respiratory or heart ailments. I saw no visible signs in the room that there might not be good indoor air quality. No one seemed to be coughing or sneezing, there was no visible dust anywhere, and breathing deeply was a relief. One thing you should always try to do is try to increase ventilation in your home or office. The more air that circulates in from the outside, the cleaner your air is likely to be. When fall comes, I am in heaven because I turn off the AC and open the windows.