As you were
Before people stopped riding public transportation altogether, this is what public transportation looked like. We never knew these plastic water bottles came in different sizes, but looks like it came in handy.
At least this mother remembered to open the cap at the top. The thing we hate most about public transportation (though it was hard choosing only one) is probably people coughing or sneezing on you. This field of protection seem to do the trick and protect you from it just as well as medical masks, if not even better.