Use a bra as a breathing mask
When it comes to something that’ll save a life, a bra’s pretty low on the list for me to consider. And that’s why I’d probably be the first to die.
If you’re in a dusty/smoky environment, you can use a bra as a face mask. In fact, there is a company out there that actually manufactures a brassiere that will filter out harmful particles of a biological, radiological or dusty nature.