And yes, before you say it, that isn't an everyday occurrence. But jackasses refusing to take their bag off the seat so you can sit down is. As are people who can't be bothered to take a shower, or think that cologne will make up for it. The list goes on. Many people are just unpleasant to be around, and I don't see any problem with that observation.
For me, public transit comfort comes down to a couple things. First, the hard plastic seats make my butt hurt, and standing makes my left foot ache. Sorry, I'm getting old :). Second, the 2x time it takes to get anywhere means I'm on that terrible seat for even longer. And third, because yes, it's absolutely true, I find that perhaps one in ten people is unpleasant enough that I want to be out of visual and/or aromatic range.
Yeah, same for me. And I've heard that the ~80s crop of NYC subway cars were made in Japan. Except there, they have upholstered seats. But that wouldn't work out well in NYC, so they got hard plastic. But on the other hand, the oldest LIRR cars (refurbished for the 1966 World's Fair) had upholstered seats, and they were ~OK.