What can Riddick and his overpowered sense of smell pick up about you? What shouldn't he pick up on?
Ex- Nonhuman. Carrying explosives. Currently taking [drug of choice]. Epic love for chili cheesedogs.
As a Furyan, Riddick doesn't quite come across like a normal human. There's the expected toxic levels of testosterone and related androgens, but there are unfamiliar elements-- slightly different body chemistry reminiscent of large mammalian Earth predators. A few other biological vagaries, nothing major.
He tends to keep fairly clean-- he's the first one to notice when he's funked up. He steers clear of scented soaps and detergent. The strongest scent on him besides his own sweat is the smell of warm leather and rubber-- he wears knife harnesses under his clothes, and almost always has his goggles on.