What is that bad odor on hair and clothing after being outside?

I have been searching on the Internet for some clue as to what is going on with me. I can walk outside for less than a minute and the “outside” smell glues to me. This is with freshly washed hair and clothing. I’m not on any strange diet or supplements that might change the chemicals in my body or even breaking a sweat. I really don’t have a clue. I know it’s very unpleasant and my son even tells me I smell like a wet dog. Extra perfumes or body sprays do not seem to phase it. I know my Mom occasionally has the same issue. How does one begin to get answers for smelling like a wet dog!?