I don't smoke. I recently started work in home health. My very first client's wife smokes.
I arrived, and asked for the care plan, and began to review it. The client's wife was amazed. She said the other home health aides pretty much just checked off the boxes on the care plan, and did as little as possible.
Well, I am diligent and conscientious. I was there to assist a disabled person, and will do my best to help.
About an hour later the client's wife calls the agency I work for and begins to excitedly praise me (I heard every bit of it).
Every time I go back, they both are so greatful for me doing a good job.

Right now, this is my only permanent client. I also do fill-ins.

Money is real tight right now.

My lungs feel awful. Actually, i am having other problems due to her smoking. She will sometimes go outside because she knows it bothers me.
I do not know how much more I can take. I am going to try on Monday to get a non-smoking client, but there may not be one available.
This is causing me much anxiety.
This couple praises me every time I go (Yes, I appreciate it). But, my body is suffering.
The wife fears I will go away. They are very nice. She (almost) begs me to continue coming.
Anyone have any thoughts on this? I would like to leave gracefully, when I can get a different client.
I feel like I will be letting these people down.
Is there something I am not considering, seeing, or understanding?
Help!