u/GaffsNotLaffs

I don't use a lot of fancy soaps or lotions, I have somewhat of a routine but not strict and not expensive stuff. I shower when necessarily, I rinse well between cheeks nearly every morning, I swab armpits and back of neck to remove excess sweat when I need to. Even when I am clean I notice the back of my neck tends to sweat more and get more greasy than the rest of my body, and sometimes the sweat will dry and turn into a salty crust. If I get sweaty again then it will be more irritating and foul, like a kind of meat odor that's a negative aroma. I do use a bit of full body deo on a q tip for hot spots like behind the knees, back of neck, tops of feet, thighs etc but no matter what the back of the neck is still more greasy and salty. I don't know what to do because my friend commented during a car ride that we must be by a landfill or sewage deposit, but I could tell he was avoiding the back of my neck or looking at it. Is there something I can do to make my neck smell cleaner?