Adjective:
noċivi, li jagħmel ħsara, ħżiena għas-saħħa, morbidità, mhux iġjenika, ħażin, difettuż, vizzjuż.
Treason is a NOXIOUS weed.
We'll just see how your NOXIOUS gas fares...
...without producing a NOXIOUS gas...