Previously in 20' x 12' lounge, I had 3 Yucca plants, 2 swiss cheese plants, 1 rubber plant, and 1 false palm - all healthy and 4'-6' tall together with half a dozen other houseplants of a smaller size. Being a smoker, I felt sure that the room was less affected by the nicotine as now being plantless, I am washing the walls down more frequently. Could the plants have contributed to the then nicotine free environment?
Yes, it is well known that many plants in the home act as natural air purifiers, making them great additions for this reason if not for their beauty as well. I'd recommend adding some more of these plants to your home.