Noun
hazmat suit (plural hazmat suits)
(US) An impermeable suit covering the entire body to protect from biological or chemical hazards.
There is always going to be another variant. We cannot go on forever in permanent hair-on-fire, cancel Christmas, hand-jobs through a hazmat suit. Bill Maher
She added that the World Health Organisation recommended either the Hazmat suit or theatre gown as the required protective gear to treat patients. Source: Internet