What should we do first when you face eathquake, wildfire smoke, volcanic reuption and checmical explosion?

What should we do first when you face eathquake, buliding fire, wildfire smoke, volcanic eruptions, war and checmical explosion?

We should wear good quality of face mask, nose mask or gas mask with no air leaking. 

Do you have good quality of above mask in stock at home?  You should buy some mask and stock it now! It will save your life in case!