Oxymoron

Is that the term I'd use here? Oh, okay, let me explain.

I walk past a hospital every day on my way to work; and without fail, there are several (what appear to be doctors/nurses/hospital staff) folks outside smoking. Not only does it seem strange to me that they should know better, but how is it healthy for them to take a few quick drags and then return to the children's ward, or the geriatrics wing; where some of the patients could have horrible allergies, and complete their work? I know they wash up, but doesn't that smell stick around in their scrubs? Another of my many, "I don't get it" moments. Forgive.