How easily is it transmitted in sweat? Many times at the public gym people leave equipment and benches wet with their perspiration without cleaning up after themselves and along comes another to use it. If you used a towel for a barrier to that stranger's sweat and they carried the virus, wouldn't that moist towel now carry the pathogen to the person and then go home to launder exposing everyone along the way?
“How easily is it transmitted in sweat”
That is a transmission factor that is more related to the end stage of the disease.
As you know, (or maybe you don’t) the virus overwhelms the immune system. It is then that the infectee begins to shed through excretions. The reason is that the virus breaks down the blood vessel walls, leaking into other areas of the body, and the skin gets hematomas, causing blood to mix with the sweat.
It is then that the sweat carries the virus..to the best of my knowledge..