Prove to me that your mask works. I would say it doesn’t, my step brother (PhD) worked in a level 4 containment lab dealing with the nastiest crap on the planet and he disagrees with you. Usually that shuts them up. If not I give the example from when I was young and worked in an operating room and we had to wear special masks when laser burning off genital warts since it would carry on the smoke and go into our nares. That one throws them off.