Simplify the following text for a Grade 9 native English-speaking person.
Original: Chronic chloroform exposure can damage the liver ( where chloroform is metabolized to phosgene ) and to the kidneys , and some people develop sores when the skin is immersed in chloroform .
Simplified: Death from chloroform can come from cardiac arrest . When Chloroform is stored for a longer time period , it can decay into Phosgene .