Nope. One mistake a nurse shouldn't do is ASSUME. Always always always check. A human's body is unpredictable. Can't you borrow any BSL machine from another patient or another ward? I am not over...
Talk to that male colleague. Let him know what he was doing and how this is out of his scope. You come to the hospital to work and not to gossip. Have a meeting for everyone and talk about bullying...
So one of the patients this morning had an allergic reaction into a food she does not know she's allergic to so we did call emergency team to come give us a hand as her ears were swelling and whole...