(1) Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment.(2) They are produced by the polymerization reaction of phenol and formaldehyde .(3) The metabolic byproducts of aspartame are methanol and formaldehyde .(4) Formalin, a solution of formaldehyde , is also used in tanning leather and preserving corpses.(5) Set on fire, these items release formaldehyde , polyvinyl chloride, and dioxins.