I do rinse my toothbrush in alcohol. I don’t know if it’s really necessary but it’s a little trick I picked up as an infection control coordinator for our dental clinic. I got back into the habit of rinsing my toothbrush nightly while going through chemo and transplant but now just a couple times per week.

I think you don’t have to obsess over things, just use a common sense approach to hygiene and keeping bathroom items clean. You’re immunocompromised but you still have an active immune system. ☺️