The phrase signifies the method of developing a tool meant to filter or masks the odor of exhaled smoke. These gadgets generally contain a housing full of a filtering materials, aiming to cut back the detectability of scents related to smoking.
Creating such a tool is perhaps undertaken to reduce disturbance to others, keep privateness, or mitigate potential publicity to secondhand smoke. Traditionally, strategies for lowering smoke odors have been practiced in varied varieties, pushed by considerations about social acceptance or well being.