Undesirable Bubble Effect

I took the subway, which was packed, which is ok, because it was peak, and peak is always packed but then came in this trashy girl with a huge flower tattoo sitting above her but (which we all had a nice view of due to her extremely low cut jean), super oiled up hair, fleshy protruding stomach, person, who casually leans against the holding pole while dropping a dirty tissue.

No one can now hold the pole, nor do they seem inclined to tell her that no one can hold the poll if she leans against it, so instead they stretch their hands up above her oil ridden hair. There is bubble around her from people avoiding her as much as possible even though every square inch of the car is densely packed.

She is a living billboard screaming: I have no respect for myself, have every STD known to man kind and I am familiar with jail and prostitution. We are all thinking the same thing as we are jostled to and fro from the many stops and starts of the subway while cautiously maintaining the bubble. When is she getting off?

When off she goes... and in enters a fresh set of people who go for the area on the pole that we still refuse to touch when a girl says "ew, that's oily".

I mentally make a note to avoid places on the subway that seem strangely vacant when a car is so packed. It's the undesirable bubble effect.