The lingering smoke odor post-house fire can be indefinite depending on its intensity and the materials impacted by the smoke. Materials like drywall, carpeting, or fabrics can hold smoke particles, which, if not treated comprehensively, can preserve the smell for years. Given the complexity of fully eliminating these odors, it’s recommended to call in professionals like Property Craft, whose expertise and specialized equipment can ensure that your home is restored to its pre-fire smell effectively and efficiently.