With OdorLock technology, is water based, low VOC, low odor and is not flammable. Unlike typical water based coatings that "wick" smoke odors and stains out of the substrate as they dry, Recon Smoke Odor Sealer with OdorLock technology prevents smoke odors and stains from migrating through the coating. This technology provides one coat odor control on most surfaces and continues to block odors even with seasonal changes in temperature and humidity. Your final step to encapsulate residual odors typically found on fire damage restoration projects.