The correct Lewis structure for phospgene is shown in the image attached.
Obtaining the Lewis structure of phosgene
After accounting for the contributions from carbon, oxygen, and chlorine, the total number of valence electrons is counted to get the Lewis structure of phosgene . The primary element, carbon, joins with oxygen and chlorine to form single bonds.
The remaining electrons are dispersed to fulfill the octet rule for carbon and the octet rule for oxygen and chlorine. The final structure reveals the molecular organization of phosgene: a carbon atom bound to an oxygen and a chlorine atom, with additional lone pairs surrounding each chlorine and one lone pair surrounding oxygen.