МАСЛОМ ОГОНЬ НЕ ЗАЛИВАЮТ

Never do anything that can start a conflict or make someone's anger worseCf: Add not fuel to flames (Am., Br.). Add not fuel to the fire (Am.). Add not oil to the fire (Br.). Butter is good for anything but to stop an oven (Br.). Pour not oil on flame (on the fire) (Br.). То pour oil on the fire is not the way to quench it (Am., Br.)