I have a man cave in my home. It has a reclining chair, a desk, a television, music, and best of all – an air purifier. I can smoke to my heart's content, and the aroma doesn't reach the rest of the house, and when I come downstairs the next day, the room smells fresh and clean – there is no trace of smoking. And that's the point of all this: invest in an air purifier, and it will keep your office smelling fresh and clean, and it will pay for itself within two or three months based on the additional rent you might be paying for the larger office. It's a one time expense and a very cost-effective solution. The Lightning Air can be had for under $400, and it works very well.