I bought my Odor Reduction Filtrete filter because I do smoke in my home and I have a dog. My home is new and I am particularly concerned about keeping my air conditioning system performing at top-notch performance, while keeping the air clean-smelling as well. I am greatly pleased with Filtrete's lineup of filters but the Odor Reduction filter is by far a great filter in performing a great job at capturing dust, smoke and other allergens and keeping them there and the filter, instead of further circulating them throughout the system and my home. I am very pleased!