What do I do with an uncut man hood?

I'm afraid of giving oral sex to a man that has not been circumcised, I know it's more natural that way bu the only 2 penises that were uncircumcised I experienced with they both smelled kinda funky for some reason and I also felt really uncomfortable like how do I perform I felt low confidences. I love giving head but when it's uncut like I don't know what I'm doing. But when I have a man who is circumcised I'm told i do have a decent to great head game. Plus I enjoy doing it. I'm not sure what to do and what to say to this guy I wanna be with sexually about this issue. Because he wants me to give him head and he's the third uncut guy I was willing but then I smelled something and came back up and mentioned not tonight and continue doing other things...
What do I do with an uncut man hood?
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