A breathing apparatus is a device that helps a person breathe in places where the air might be dangerous or contain harmful substances. It helps ensure that the person gets clean and safe air to breathe. Full definition
Its products include self - contained breathing apparatus; fixed gas and flame detection systems, handheld gas detection instruments, head protection products, fall protection devices and thermal imaging cameras. (borntosell.com)
I'm too practical to want to walk around in a full breathing apparatus all day long, appealing as that sounds. (discovermagazine.com)
And the faulty breathing apparatus is your own body. (health.com)