Malodorous means smelling very unpleasant. A malodorous drain.
It is a formal word and is often used to be polite about something disgusting. Malodorous is also used of a situation that smells wrong in a figurative sense.
1adjectivemalodorousSmelling very unpleasant.
“The malodorous bin outside the kitchen door emptied the terrace.”
malodorous is a quality.
From mal- + odorous.
Etymology from Wiktionary, CC BY-SA