“Well, CH3SH is a rather small molecule with a diameter around 410^-10 m (0.4 nm, about 1.610^-8 inches),” Makal continues. “By comparison, viruses typically range in diameter from about 20 nm up to about 400 nm (J. Biol. Phys., 2013, 39(2), 215), with COVID-19 being around 60-140 nm (Cell. Mol. Immun., 2020). The difference in sizes of the COVID-19 virus and a common odorant in farts is 2-3 orders of magnitude (100–1000 times the diameter of the smaller methanethiol).”

FART Particle is 100 to 1000 times larger then the Covid virus…

If you can smell a fart through your mask after it has travelled through my shorts and jeans then DO MASKS WORK ???