光气

光气	guāng qì	phosgene COCl2, aka carbonyl chloride, a poisonous gas
光	guāng	light; ray (CL:道) / bright; shiny / only; merely / used up; finished / to leave (a part of the body) uncovered
气	qì	gas; air / smell / weather / to make angry; to annoy; to get angry / vital energy; qi