Wearing a helmet can get pretty stuffy, not to mention possibly even quite smelly too, but it looks like the army has come up with a solution – a helmet with a built-in respirator. As you can see in the image above, the futuristic-looking helmet is currently a work in progress in the army and it’s essentially a helmet that can help keep its wearer cool and poison-free at the same time. Respirators for soldiers aren’t new, but they are typically rather large and bulky, making it quite a chore to carry around.