If you saw someone doing this, would you say something?

[Icouldstillbejoseph]

I commute into London most days. Yesterday on the way home there was a man in the carriage who clearly had a runny/blocked nose.
He was picking it and wiping it on the seats. He had headphones on, watching his phone and appeared completely oblivious to being in public (and being gross).

Would other people challenge this or just accept it as a risk of disgusting public transport?

I've seen deodorant applied, nails cut, make up put on from foundation up, people are just gross.

@MaomiMak yeah same same but they seem less capable of spreading germs at a time when everyone is supposedly, hyper aware