At least until now, as [Aris Alder] tackles the problem with an affordable DIY supplied-air respirator ... from his baseline when the hood is on and powered up, which bodes well for the system.

If an employee exhibits/experiences difficulty in breathing (that is unrelated to respirator function) during testing or use, he/she shall be referred to a physician to determine fitness to use such ...

Respirators, more commonly known as face masks, are meant to keep health care and emergency workers safe from chemicals and infectious particles. Surgical masks can be helpful if you are sick ...