qwazse

No lie, before I stumbled my way onto a disposable surgical mask, I was using hankerchiefs. (None scout related ones) 

No.  My glasses steam up with the neckerchief and not with a proper mask - exhaled air escaping without filtration - and entering no doubt.  Adhesive tape can help correct this deficiency with neckerchiefs.  

Full disclosure, I stick with the surgical masks. Having a large jaw, most pre-molded face masks don't give me enough coverage. The necker, folded into a cravat is about the right filtration (depends on the type of fibers and how/how often they've been washed), but tying it so that air flow is directed down and sideways can be tricky.

My unit-leader necker from WSJ would have been perfect, but I gave it away.