From Longman Dictionary of Contemporary Englishpongpong /pɒŋ $ pɑːŋ/ noun [countable usually singular] British English informalSMELL an unpleasant smell an awful pong in the fridge► see thesaurus at smell —pong verb [intransitive]
Examples from the Corpus
pong• What a pong! This place hasn't been cleaned for years!• Pseudomonas prefers a nice warm fridge, but has less competition in the cold, hence the pong.• The pong was such that we used to pinch our noses as we ran past. 