If you do, and you're thinking of selling anytime in the next few years, I would strongly encourage you take it outside. I walked into a home with some buyers a few weeks ago, and it smelled like the sellers had just smoked, moments before our scheduled showing. Unfortunately for the sellers, we weren't in the house for more than 30 seconds before we turned around and walked out. I couldn't even tell you what the house looked like, the odor was so distracting. The remnants of smoke odor can be detected for many years; that smell isn't easy to get out, even with new flooring & paint. With the current market situation, do yourself a favor, and at least give buyers a chance to fall in love with your home!