How do they not get stds

I've noticed a trend in omegaverse: no mention of STDs. I guess they got the universe where those don't exist.

Meanwhile we have the universe where there was, perhaps, an actual plant that prevented pregnancy and the ancient Greeks f*cked it out of existence, which is saying something with how gay the Romans were. We have to take those old records with a grain of salt, considering how many ways you could die without knowing why back then.