Mundungus (noun) (archaic)
Tobacco of poor quality, bad smelling.
Mid 17th century (in an earlier sense). From mondongo or its etymon Spanish mondongo.
“You can tell old Bob has been in here with his mundungus, it stinks!”
Nothingburger (noun) (Chiefly US)
A person or thing of no importance, value, or substance. Now esp.: something which, contrary to expectations, turns out to be insignificant or unremarkable.
1950s: from nothing and burger. Added to the OED October 2018.