How do I disinfect my bathtub/shower after plumber visit?

Hi guys, idk if this is the right place to ask but I had a plumber visit me when I wasn't home (my mum opened) and since she's not as anxious as I she didn't think of wrapping the shower cord around the faucet so it wouldn't dangle loosely when the plumber got in the bathtub to inspect the pipes behind the sink, and now I'm freaking out about what kind of stuff he could have carried on his shoes in the bath and by proxy on the shower cord/shower head, so in short...

how do I disinfect the bathtub, shower cord and shower head? I've read a lot of people use bleach/other form of chlorine for that but I live in EU and I don't think I've seen bleach available here, any tips? Should I use toilet cleaning gel? Just wipe the thing or dunk it in some sort of container full of dissolved cleaning liquid? Any tips appreciated.