Sentence:  Yet if he were not there , they would have missed him , as they would have missed the sounds of bees buzzing against the screen door in early June ; or the smell of thick tomato paste - the ripe smell that was both sweet and sour - rising up from aluminum trays wrapped in <WSD>fly</WSD> dotted cheesecloth . 
Meaning of the word marked with <WSD> tags:  two-winged insects characterized by active flight