If conditions permit, wet the towel with water and wring it out gently. Fold the towel into eight layers or it's useless. Cover your face and find a safe place quickly. -Towels can be used for 3 minutes at most, and toxic gases will enter the body after 3 minutes. If conditions do not permit, you can wet your clothes with urine. Can achieve the same effect.

If it has been poisoned, it should be quickly moved to a safe place to prevent further poisoning and sent to the hospital for treatment. If breathing stops, you should first move to a safe place, then do artificial respiration for rescue and send it to the hospital.

I still hope that such a thing will not happen.