respirators

/R EH1 S P ER0 EY0 T ER0 Z/
noun
  1. 1

    A device designed to allow breathing when it would otherwise be hindered, as by a medical condition or the presence of poisonous vapors.

    โ€œThe house painters were each officially required to wear a respirator, but this was sometimes disregarded in the extreme heat.โ€

Source: https://en.wiktionary.org/wiki/respirator, https://en.wiktionary.org/wiki/respirators