uck

The opposite of a pheromone, a bad smell you can almost taste in the air whenever some nigga or homie or geek or whatever gets angry about something stupid and shouts: "I don't give off uck!" I have news for you dude, you do give off uck, and it stank.

Uck can also be understood as being short for "uck-fay ooh-yay" a somewhat dignified expletive in pig latin for fleck you or flank you or equivalent frickin terms

Hubert: F*ck you, b*tch, I don't give off uck anymore
Lisa: Really? Then what's that smell, Hubert. Uck. Uck-fay ooh yay.