An interesting piece on BBC News:
Margaret Thatcher suggested threatening Saddam with chemical weapons - BBC News
The rumour we heard was that Saddam had been threatened that if he
ever used CW against the coalition, then the likely retaliation would be a bucket of sun....
Fortunately all those wretched Scud attacks which came our way had HE warheads, most of which fell to bits anyway. But after one attack on KKIA, NBC Black was announced - a CAM had alerted. Luckily it turned out to be a false alarm caused by a truck exhaust...