Using a gas mask underwater would not provide any protection and could be extremely dangerous. Gas masks are designed to filter out harmful airborne substances, such as gases and particulates, from the air we breathe. They are not designed or equipped to function underwater.
If someone were to submerge themselves underwater while wearing a gas mask, several risks and issues would arise:
Lack of oxygen supply: Gas masks rely on the availability of ambient air to provide oxygen for breathing. Underwater, there is no readily available source of breathable air, so the person would quickly deplete their oxygen supply.
Water infiltration: Gas masks are not designed to be waterproof. Submerging them underwater would likely result in water entering the mask, compromising its functionality. Water entering the mask would obstruct breathing and potentially lead to choking or drowning.
Pressure-related issues: As one descends deeper into the water, the surrounding pressure increases. Standard gas masks are not built to withstand the increased pressure encountered underwater. The mask could become distorted, compromising its seal and further increasing the risk of water infiltration.
Limited vision and mobility: Gas masks have limited visibility and can restrict peripheral vision. Underwater, where visibility is already reduced, this limitation would become even more pronounced, making it difficult to navigate and potentially leading to accidents or disorientation.
In summary, attempting to use a gas mask underwater would not only fail to provide any protection but could also pose significant risks to the individual's safety. It is crucial to use appropriate equipment designed for underwater activities, such as diving masks and breathing apparatus, when venturing into aquatic environments.