I went to Africa in February this year and brought a thermos that could hold hot water and a collapsible bowl with a lid. At every place they had very hot water in a dispenser for tea. I could fill up the thermos and use that it disinfect with a bit of Dawn. I am not sure if this was a good choice, but it seemed to work for me.
My CT scan 3 months after I got back showed my brochiectasis stable.