How do you explain and call that special smell of a hospital?

I mean, there is a special one you can smell only in hospitals. How you call that? Is it a medicine smell? Patients smell? Mix of everything?

A gas station has a special smell of fuel, but what is that smell in hospital? It is a mystory smell for me, very unique.

I thought about this question while visiting my grandmother this morning and I’ve heard in the elevator someone said she is allergic to the smell of hospitals which made me immediately think about the question and now I’m asking you. What do you think?