gas mask as part of prep ??

[Metroyeti]

Got a mask because I found it whilst demolishing a chemical factory. I need new filters for it and a shave to wear it. The disposible kind only last about 30mins becaude they absorb moisture,so have plenty for a pandemic/dusty enviroment. Failing have a mask in a chemical attack you could pee on a rag,not sure how effective,but it worked during ww1