In the last few years there has been a growing focus on emissions from post-combustion CO2 capture plants. The main concern has been that plant emissions may result in a buildup of nitrosamines and nitramines in the environment. These compounds are carcinogenic and may form from reactions between amines and NOx. Nitrosamines and nitramines may be emitted from a CO2 capture plant or may form in the atmosphere as a result of emissions of amines or other degradation products. The present work will summarize the issue, discuss the current state of knowledge and identify remaining knowledge gaps.