The answer to 'why is my upholstery odor' is that there are several common causes, including spills, pet accidents, mold/mildew, and general wear and tear. Symptoms may include a musty, stale, or unpleasant smell that lingers on your furniture. Addressing the odor usually requires a combination of cleaning, deodorizing, and potentially replacing damaged upholstery.
For minor odors, you may be able to DIY the cleaning process using a upholstery cleaner and baking soda. However, for more stubborn or deep-seated odors, it's best to call in a professional upholstery cleaning service. They have the tools and expertise to thoroughly clean and deodorize your furniture to eliminate the source of the smell.