It is shaped like a lung and holds an uncomfortable secret. 🫁

Every cigarette put out in this ashtray leaves its mark exactly where it would in a real body: ash and tar accumulate in the soft, pink mold, imitating the tissue that should be clean so you can breathe effortlessly. No complicated medical explanation is needed to understand the message. Just look at it after a couple of cigarettes.
Tar is a sticky mixture of thousands of chemical compounds, several of them carcinogenic, that clings to the mucous membrane with every inhalation. Over the years, that layer thickens and slowly suffocates the alveoli, the tiny air sacs responsible for supplying you with oxygen. This ashtray needs no words: it shows you, in real time, what you cannot see inside your own chest. 😷
