Can I wear a disposable mask to protect the explosion area in Tanggu, Tianjin?

How to skillfully use the activated carbon mask bought around you for protection against the toxic gas of hazardous chemicals produced by the Tianjin Big Bang? He Lan Mask Laboratory has summed up a set of simple and effective practical methods and steps through repeated experiments: Step 1: Take a wet tissue and cover your nose and mouth with it. Pay attention to ensure that the wet wipes are close to the face and do not leak. If the moisture of wet wipes is not enough, you can pat them with mineral water, subject to the dripping of wet wipes. Step 2: Take a disposable activated carbon mask or N95 activated carbon mask, with the black face facing outwards, and cover your mouth and nose. Note that if the carbon content of disposable activated carbon masks is not high, you can wear two activated carbon masks at the same time to increase the carbon content and air tightness. In addition, because the wet wipes have been attached to the skin, the air tightness is enhanced, so the air tightness is not a big problem for both N95 masks and disposable masks. If there are no wet wipes, at least two disposable activated carbon masks should be worn to enhance their air tightness. Step 3: After wearing 1~2 hours, change the wet wipes once; After wearing it for 3~4 hours, change the activated carbon mask. It is suggested that the carbon content of disposable activated carbon masks in He Lan should be above 50%, and the carbon content of others should be below 30%. Step 4: Wash your face and rinse your mouth in time after taking off your mask and wet wipes. Because hydrogen cyanide and ethylene oxide are easily soluble in water, toxic substances are produced, so it is necessary to pay attention to the water of wet wipes not to enter the mouth. After coming out of the polluted area, throw away wet wipes in time, wash your face and rinse your mouth in time.