What type of compound locks in vaporous odor molecules?

The correct answer is sealer. Sealers are designed to create a barrier that locks in odor molecules, preventing them from being released back into the air. This is particularly important when dealing with porous materials or surfaces that have absorbed odors. By sealing these surfaces, the sealer encapsulates the odor-causing compounds, effectively controlling the source of the odor and preventing it from spreading. This method is often used in conjunction with other odor management techniques to ensure a comprehensive approach to odor control. Using a sealer is especially effective in situations where odors originate from materials that are challenging to clean or when complete removal of the source is not possible.