The answer to 'why is my window odor' is that there are several common causes, including condensation, mold growth, and chemical residues. Condensation can lead to musty or stale odors, while mold and mildew can produce pungent, earthy smells. Chemical residues from cleaning products or painting can also leave lingering odors.
If the odor is mild, you may be able to address it through DIY cleaning methods. However, for persistent or strong odors, it's best to call in a professional window cleaning service. They can properly identify the source of the odor and use specialized techniques and products to fully eliminate it.