This air filter was recommended to me by two allergy experts as the best one to use for tobacco smoke, and it works great. When I walk in the door, I can actually smell air fresheners in my house for the first time ever. And better yet, the non-smokers visiting on Christmas day didn't get itchy eyes and headaches. I recommended one for my sister, who's a smoker in a small apartment. When you walk in, there's no longer a smoky haze. She's also quit coughing as much when she wakes up in the morning. Would definitely recommend, at least where cigarette smoke is concerned.
Mt Vernon, IL.