饮鸩止渴

to cut one's flesh to cover a sore (idiom); faced with a current crisis, to make it worse by a temporary expedient

lit. to carry firewood to put out a fire (idiom); fig. to make a problem worse by inappropriate action

add firewood to put out the flames (idiom); fig. ill-advised action that only makes the problem worse; to add fuel to the fire

lit. distant water does not cure present thirst; fig. urgent need; a slow remedy does not address immediate needs

to allay one's hunger and slake one's thirst (idiom)

to bury one's head in the sand (idiom)