Fragrances in shampoo, lotion, laundry detergent, fabric softeners are harming people who need care. There is absolutely no reason to permit caregivers to carry toxic odors to people in their homes.
Sometimes caregivers need to be told, frankly. I had to tell two that using undiluted bleach in a closed environment, in the late winter, wasn't acceptable.
Most hospitals, health care offices and facilities here are scent free, I'm not certain if our local home care agencies stress that or not. One area where even well minded people may err is not considering that moisturizing lotions, antiperspirants and talcum powders can be heavily scented, often all it takes is someone pointing this out.
I agree, though - strong odors can be a serious problem to those with breathing problems or allergies.