The phrase indicates the process of constructing a device intended to filter or mask the odor of exhaled smoke. These devices commonly involve a housing filled with a filtering material, aiming to reduce the detectability of scents associated with smoking.
Creating such a device might be undertaken to minimize disturbance to others, maintain privacy, or mitigate potential exposure to secondhand smoke. Historically, methods for reducing smoke odors have been practiced in various forms, driven by concerns about social acceptance or health.
