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After the 1918 flu epidemic, both hygiene and etiquette advocates began to disparage public use of the spittoon, and use began to decline. Chewing gum replaced tobacco as the favorite chew of the younger generation. Cigarettes were considered more hygienic than spit-inducing chewing tobacco. While it was still not unusual to see spittoons in some public places in parts of the US as late as the 1930s, vast numbers of old brass spittoons met their ends in the scrap drives of World War II.