[Yardstick]

There is no reason a mask would increase the viral load.

[RummyChick]

He is probably talking about the rebreathing issue once you have been infected.

[Svartalfiar]

There is no reason a mask would increase the viral load.

With a properly sealed mask, at a small enough filter level, with consistent replacement with a sanitary mask, AND proper decon procedures for doffing, you are correct.