In Silencer,  did anyone else perceive Chat Noir’s jokes as his way to cheer up Ladybug? Lift a bit of her worries or at least, change her mind. He knows how much weights she has on her shoulders. 

Just look at her dread expression.

His jokes might have been consider inappropriate due to the timing and situation at hand BUT it was also him trying to be funny that helped LB find a solution. It was his “maybe I could try to mimic your voice” joke that lead her to her plan. After that, she starts smiling and be confident again. And Chat also stops joking and focus on the job afterward.