COVID-19 Outbreak Information Updates (Reboot) [over 150.000,000 US cases (est.), 6,422,520 US hospitilizations, 1,148,691 US deaths.]
During the Pandemic, N95 masks weren't readily availabe, especially during the height of it.
But if one person was wearing a regular mask, if the odds were 50% in your favor and the seond person was wearing a regular mask, i would assume the percentage is much higher than if only one was wearing a mask.