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Sodium nitrite is an ingredient used in curing salt for meat preservation and metal refinishing and is typically sold at lower concentrations.—Mary Cunningham, CBS News, 19 Feb. 2026 In his 1989 article, Duesberg had insisted that the true cause of AIDS was drug use by abusers and nitrite poppers favored by homosexuals.—Business Columnist, Los Angeles Times, 29 Jan. 2026 Urinary nitrite is derived from the metabolism of dietary nitrates (leafy green vegetables) in the presence of bacteria, such as E. coli, which possess the enzyme nitrate reductase.—Neil Gaffin, STAT, 29 Dec. 2025 Although more research is needed, Vitamin C may help convert a compound in urine called nitrite into nitric oxide, which can kill harmful bacteria.—Jillian Kubala, Health, 3 Dec. 2025 See All Example Sentences for nitrite