I'm going to say that while I do think that non-sexual transmission is possible, I do think it's a lot less likely than sexual transmission. I wouldn't be able to guess the odds but I'd just say that non-sexual transmission is a lot less likely.
In the end it just boils down to how much trust you have in your partner's fidelity.
OH IM NOT A DOCTOR. THERE AREN'T ANY DOCTORS ON HERE JUST RANDOM PEOPLE W/ DIFFERENT OPINONS.
YES, U CAN GET FROM SITTING ON OTHER PEOPLES TOILETS OR EVEN PUBLIC TOILETS ALSO SHARING JEANS OR PANTS AND EVEN USING TOWELS OTHER THAN UR OWN.