I've told people who want to test the efficacy of the mask to walk down the supermarket aisle that contains all the washer soaps and other similar items. See if they can smell the stuff. When they admit the scent really permeates their little masks, there's the proof. If you can smell it, those molecules carrying the scent have gone right through the mask and are in your nose. I rest my case.
I've told people who want to test the efficacy of the mask to walk down the supermarket aisle that contains all the washer soaps and other similar items. See if they can smell the stuff. When they admit the scent really permeates their little masks, there's the proof. If you can smell it, those molecules carrying the scent have gone right through the mask and are in your nose. I rest my case.
I've told people who want to test the efficacy of the mask to walk down the supermarket aisle that contains all the washer soaps and other similar items. See if they can smell the stuff. When they admit the scent really permeates their little masks, there's the proof. If you can smell it, those molecules carrying the scent have gone right through the mask and are in your nose. I rest my case.