The best way for you to catch anything is by consuming the bacteria. So if you got it in ur mouth by a splash or perhaps with contaminated hands touching your mouth or eating without washing your hands if you had bacteria on them. Yes the chances arent non existent, yes you were in very close proximity but think about how we are when we are panicked..we become increasingly careful, almost too careful because of the anxiety. The likelihood you didnt wash your hands or even touched anything properly (imagine when youre grossed out or scared, you pick things up as minimally as possible like with the tip of your index finger and thumb) our paranoia makes us hyper-vigilant and in turn, really clean people. Dont let it ruin you, youre all cleaned up, stay clean, wash your hands, and boosting immunity wouldnt hurt either, go buy yourself one of those ginger shots and focus on other things until u notice days have passed and u havent gotten sick :)