I doubt someone got sick in the garbage can in the bathroom. Surely it would be easier to get to the toilet. Not to be gross, but the sink would have had more than spots in it,if someone had recently V*d in it. As for the red faced woman, it has been a long time since I did V*, but I think you get pale, not red. Also, if she had eaten Chinese Food and felt well enough to do that, she probably didn't have an SV. Usually, it does hit fast, but if it was that fast...once again , not to be gross, maybe she had a big smelly poop and that was why she was so red faced.
Anyway you go about it, you are fine...you washed your hands, used hand sanitizer and I think that I recently read that it is easiest to get an SV by hand to mouth, eyes or nose if they have the contamination of the virus. You don't need to worry. I'm certain it was nothing and if it was our worst fear, you protected yourself perfectly.
TRY to live each day like it were your last