I follow a board similar to this run by NTM Info and Research and a doctor who specializes in NTM research is a frequent contributor. Almost everything you would order at a restaurant except for hot drinks could contain NTM bacteria that could them be aspirated into your lungs when bending over or sleeping. I carry a crazy cap bottle to restaurants, order water without ice and then use the bottle to sterilize it. It just depends how careful you want to be. If you want to see the research you can go to the NTM forum and put DR Falkinham in search box and his posts and published work will pop up