I just maintained normal levels of hygiene. I'm a nurse, so lots of hand washing was the norm.
I was working in a general practice at the time, and my nursing colleagues and the doctors just tried to keep me away from potential infectious patients.
I did end up in hospital once with febrile neutropaenia, but they didn't find an infection, so.....
Other than that episode, I worked 3 days a week right through chemo. And I know how lucky I was that I could manage it.
As others have said, perhapsa little extra care on those days you are most at risk, and try and keep things relatively normal