"Practice breathing through a straw for an hour, that will give you an idea of breathing with resistance."

"you know the smell of dead bodys is quite a smell it never goes away once you smell it it will always be there. and whos to say that we will be on are feet for the hole thing i know ill have a truck so when your driving wear a respirator youll be use to it. then when you go out looking for food and supplys you will not notice it. but as for goggles i cant have something block my view even it its just a little bit so ya zombie juice "

"That’s true enough, though realistically you should be more concerned with toxic gas releases (whether incidental to or deliberate because of the outbreak).
And many of these gasses are colorless and odorless (two most likely to occur are chloride of ammonia and chlorine gas, the first is from mixing ammonia and bleach, the other from boiling bleach until the chlorine is released)."