Harv came back from being out all night. Nell screamed when she saw him 
because he was a charcoal wraith with two monstrous growths on his face. He 
peeled back a filter mask to reveal grayish-pink skin underneath. He showed her 
his white teeth and then took up coughing. He went about this methodically, 
conjuring tangles of spun phlegm from his deepest alveoli and projecting them 
into the toilet. Now and then he would stop just to breathe, and a faint 
whistling noise would come from his throat.