While I was pregnant with my first child, I was especially sensitive to aromas. The aroma of household cleaners, particular foods & perfumes were problematic, causing nausea & headaches. I noticed that cooking odors spread throughout the current home & took a long time to dissipate. It got me upset with indoor air pollen levels. I realized that these aromas were being transported by the ductwork. I assumed that any allergens inside the gas furnace, air conditioner or ducts were getting introduced into our breathing air every time the heating or cooling program operated. I sad about the risk of health problems for an infant with an immature immune system. I study a lot of articles online & then got in touch with a local Heating & A/C business to schedule air quality testing & discuss options. The serviceman performed a variety of tests to identify the type & level of problems with our indoor air pollen levels. I l earned that our largest problem was airborne particulates such as dust, dander & lint. I busy ductwork cleaning & a thorough service for the gas furnace & air conditioner. I invested into a media media air cleaner that traps pollutants too small for the eye to see. It captures mold spores, smoke particles & harmful VOCs. It also helps with unpleasant odors & hazardous pathogens. The media air filter makes really little noise & runs 24/7. It only needs annual upkeep & has made a noticeable improvement in the cleanliness, freshness & aroma of the home. Because of it, I felt much more confident bringing my current baby current home from the hospital.