If you are trapped inside the building ,to use a damp cloth to prevent the gas filling the doorway. And find shelter the blast and explosive strength.To protect against poison gas.
If you are trapped inside the building, to use a damp cloth to prevent the gas filling the doorway. And find shelter the blast and explosive strength. To prevent gas poisoning.
If you are trapped inside the building to use, a damp cloth to prevent the gas filling the doorway. And find shelter the. Blast and explosive strength.