Translate the following English sentence to French:
"How is this body supposed to be neutral when it includes so-called experts that have spent their time deceiving public opinion, now supposed to become impartial judges of the harmfulness and toxicity of the products sold by their own employers?"
Comment peut-on imaginer un instrument neutre, comprenant de soi-disant experts qui ont passé leur temps à mentir à l'opinion et qui deviendraient des juges impartiaux pour la nocivité et la toxicité de produits vendus par ceux-là même qui les emploient ?