Large number of discarded cigarette butts

Observation

One cigarette butt. What could possibly happen?

The photograph was taken at München-Laim station. Just a few metres away: a no-smoking sign and litter bins. Yet there is not one cigarette butt here, but many.

This is not about accusing smokers. The more interesting question is different: how does a seemingly tiny leftover become a relevant problem?

Scale: the WHO refers to around 4.5 trillion cigarette butts being discarded into the environment worldwide each year. Almost all commercially sold cigarettes have filters made of cellulose acetate – a plastic that breaks down poorly and can release microplastics.

Small enough to overlook

A single cigarette butt seems insignificant. In large numbers, the perspective changes. After smoking, nicotine and other substances remain in the butt; when discarded, they can enter the environment.

For children, small size is no protection

Germany’s Federal Institute for Risk Assessment (BfR) states that after eating more than half a cigarette or a cigarette butt, children can develop symptoms such as nausea, vomiting, agitation or palpitations. In such a case, a poison information centre should be contacted.

And then there is fire

A carelessly discarded cigarette can start a fire in dry conditions. The Bavarian state ministry explicitly lists discarded cigarette butts as a possible cause of forest fires.

The question behind the image: if one cigarette butt seems tiny, at what number does our intuitive sense of scale become misleading?

Sources and further reading