Also cancer (especially when treated with chemo) and congenital autoimmune disorders. You actually wear your paper mask inside out to put the fluid barrier on the inside to keep particles IN better when providing care. They also can’t have raw fruit or veggies or unpasteurized dairy (and nobody should be eating raw meat for the most part) and they can only have fake or origami flowers (a really cool hospital volunteer project just make sure to wash your hands and not fold / assemble them while sick).