mask?

as long its 3-ply kind and you can differentiate the fluid-repel side and the absorbant side. its very impt to be able to differentiate. wrong method reduce the effectiveness

Yes should be fine as long as it is put with right sides for the absorbent as well as the fluid

Cloth masks do not give protection against droplets or viruses. Only dust or haze perhaps.

If no other option, this is ok.

3-ply face mask can

Should be fine

???