Last winter, I decided to cook salmon for dinner. The salmon was especially fishy aromaing and tasting. The aroma from our meal spread through the entire house. That night, when the two of us noticed the scent was quite strong in our living room. The following morning, the aroma continued to linger in every room, but i tried vacuuming, lighting scented candles and setting out boxes of baking soda, then unfortunately, with the outdoor temperature in the teens, it simply wasn’t possible to open the windows and take advantage of fresh air. I finally did some research and realized that the aroma had gotten into the air duct. When there’s an accumulation of dust and other debris concealed inside the ducts, it can absorb aromas and spread them throughout the living space every time the oil furnace starts up. This is an indication of troubles with airflow through the air duct and troubles with air quality. It was absolutely likely that there was dust, dander, harmful bacteria and potentially mold inside the ducts. I reached out to a local Heating and A/C company that specializes in duct cleaning. After testing and inspecting the duct system, the worker confirmed that cleaning was necessary. The cleaning process took several seconds to complete however created no mess or damage. The improvement was instantly obvious! Not only was the unpleasant aroma eliminated however our home felt much more comfortable. The temperature from 1 room to another is now more consistent. I don’t need to vacuum or dust as often and our monthly heating bills are significantly lower! Because the oil furnace doesn’t need to toil as strenuous to distribute heat, it should be more reliable.