Nuc Mam is liquefied fish, either the oil or the whole creamed fish, fermented and vinegar added. Usually with some spices. Smells like a fishing pier only stronger. It gets stronger with age.

I mainly use it in an area where the hogs are crossing, they often stop or slow down to check out where that wonderful aroma is coming from. One place I hunt Hogs has fishermen, fish guts are something they find hard to ignore, free proteen.

Hogs often travel from bed to food in a general direction and often don't stick to the trails.

Hard to say what will spook a Deer, man scent most always to some degree, they've been hunted by man forever, likely genetic memory. But they can get used to anything over time. Except maybe jumping out in front of headlights, that one seems beyond most of them to adapt to.

Joggers and mountain bikers seem to spook the heck out of them, tractors not so much. There is likely some reason for their behavior. I'm not a Deer, darned if I know for sure.