Blowjob disease risk?

Hey guys bi curious guy here. So I'm on the fence and pretty much have an oral fixation towards men. I want to explore this side of myself more but also am constantly worried about the fear of getting something. If I don't swallow what are the odds of getting something from giving head to a guy? (I'm sure someone will recommend condoms but when I want to suck a cock I want the skin in my mouth not plastic! Lol) thanks for any and all input guys!!