I don't even mind that sort of thing if their culture is fairly innocuous - Orthodox Judaism, the Amish types (possibly?) and I think some Sihks as well. It's when that culture is happy to kill me to prove its superiority that I get a little worked up.
I actually did have a woman that I think was muslim (NoI, probably) refuse to give my son (4 yrs old) a seat on the bus. She was sitting there with her coffee and some other crap on the seat beside her. I didn't want to be rude and actually say something (you know how it is...although that basic avoidance impulse has been stripped away since) so I kind of gestured with my head and cleared my throat. She looked right at me, and I gestured towards the seat - she didn't move a muscle. I frowned, gestured again, no response. She could merely have been an asshole of course; it doesn't need to be religious, and I don't know that it was any kind of "contamination" issue.
I actually did have a woman that I think was muslim (NoI, probably) refuse to give my son (4 yrs old) a seat on the bus. She was sitting there with her coffee and some other crap on the seat beside her. I didn't want to be rude and actually say something (you know how it is...although that basic avoidance impulse has been stripped away since) so I kind of gestured with my head and cleared my throat. She looked right at me, and I gestured towards the seat - she didn't move a muscle. I frowned, gestured again, no response. She could merely have been an asshole of course; it doesn't need to be religious, and I don't know that it was any kind of "contamination" issue.