Try getting masks with rigid metal bands that you can fold around your nose. If you can't find them, get a cloth mask and cut two small slits in the top and thread a piece of metal wire or a paper clip through the slits so it's over-under-over the mask. That will let you mold the mask to the curve of your nose/cheeks, and should help with the fogging problem.
Try getting masks with rigid metal bands that you can fold around your nose. If you can't find them, get a cloth mask and cut two small slits in the top and thread a piece of metal wire or a paper clip through the slits so it's over-under-over the mask. That will let you mold the mask to the curve of your nose/cheeks, and should help with the fogging problem.