Can someone help me on what to do

Hi can someone help me this seems really weird but my dog wont stop licking other dogs pee its rlly disgusting and when were on walks its like the only thing he does i dont enjoy the walks and i wanna cry everytime i take him out i have to pull him away but he doesnt let me and i end up looking like a bad person to other ppl because i have to drag him away to stop him and i feel like shit everytime