Tonight, I built myself a home-made air filter/ purifier. Now that winter is settling in, up here in Idaho, I am forced to look for way to smoke cigars without freezing. So, if I want to smoke inside I am going to be forced to have some form of air purifier. I noticed on Amazon and YouTube many air filtration systems designed to specifically treat smoking odors, but I just cannot afford to shell out $600. So, I toddled off to Walmart and bought myself a 20" box fan, a Hepa filter, and a carbon filter. Question: Do you think this will work? I love my cigars, but I sure don't want the lingering odors affixing to my furniture.