This is interesting.
My mother is currently going through chemo. I moved cities to be with her through this process. Her third trip to chemo was my first time accompanying her.
I wore perfume. I generally only spray a tiny bit on my wrist and that was it. You have to be pretty close to smell it.
Anyway, one of the nurses came up and asked me if I knew the 'no scent' rule. She was tactful about it and explained how people receiving chemo are sometimes painfully sensitive to scent/smell, and therefore they ask that no one wear perfume.
I was horrified, as was my mom, who had forgotten to tell me.
I apologized profusely and went immediately to the bathroom to wash it off the best I could.
On a later visit (where I wasn't present), the nurse commented to my mother as to how appreciative she was that I had been 'so nice' about the perfume thing. Apparently, people have taken great offense to this.
The fact that anyone could take offense to being mindful of patient's comfort during chemotherapy was truly appalling to me.