My favorite essential oil is eucalyptus. I put it in my defuser all day not only does it help with sinus problems it refreshes your house. Eucalyptus draws out musky air. After louisiana was slammed by a hurricane that cause a lot of home to have mold and mildew in it we found out that eucalyptus kills those bacteria and absorbs the smell. This is an awesome product if you love essential oils I recommend you purchase this one.