A stuffy nose can occur at any time of the year, and when it happens we're not always sure what to do about it or what is the culprit. Should we stay away from air conditioning or should we warm the house? One of the leading cause of a sudden sneeze attack and a clogged up nose is the dramatic difference in temperatures between the weather outside and the climate indoors. In the summer, upon entering an air-conditioned room after spending time outside, you might get a stuffy nose because the mucous membranes in your nose and sinuses start producing liquid to adjust the temperature of your body to the new environment. In the winter, on the other hand, your AC dehydrates the air in the room, which can dry up your sinuses. This is bad because your sinuses need to stay moist to be able to clean the air that goes into your lungs. A dry nose can make you more prone to infections and allergies, and is also hard on sensitive sinuses, making it harder for them to heal from the infection. Air-conditioner filters, if not cleaned properly or often enough, can quickly accumulate dust and harbor bacteria, which the AC can then spread around the living space. Once you inhale the contaminated air, the bacteria and dust can get stuck on the surface of your nose and irritate them, making you sneeze. The Journal of Environmental and Occupational Health published a study measuring the number of bacteria in air-conditioned homes and found the air in the homes were significantly more contaminated with bacteria than the air outdoors. Even more interestingly, participants that lived in the homes most contaminated by bacteria often complained about sinus congestion, eye irritation, and headaches. |
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