I have a No Mask for situations like flying (not that I’m allowed to do that any more - *sigh*). It helps when you see a potential mask nazi coming toward you, or you’re approaching one (stewardess), to tip your head downward or away like you’re looking for something in your handbag or watching the floor as you walk. If a light shines on your face the wrong way, others can see through the mask. Best to avoid bright lights and close examination. I bought several and distributed them to friends and family and removed the tag from mine as soon as I received it, recommending the same to others. Many of the stewardesses I’ve run into love their new-found power and wield it ruthlessly.