The Invisible Poison of Celebration: Tracing Carcinogens from Pandal to Plate

The Carcinogenic Pujas: When Celebration Meets Chemistry

The science of festive smoke, toxic air, ultra-processed food and the invisible price of celebration.

What if the air we breathe during our most beloved festival carries a chemical burden that outlasts the celebration itself?

Durga Puja is a celebration of triumph, artistry, devotion and community. Yet, beneath the illuminated pandals and festive feasts lies a less-discussed scientific reality: the chemistry of combustion, the biology of air pollution and the cumulative risks associated with certain food-processing practices. The question is not whether Durga Puja causes cancer, but whether some of the ways we celebrate expose us to avoidable carcinogens.

The Chemistry of Festive Air

Incense sticks, dhuno, candles, oil lamps, firecrackers and vehicle emissions can release a complex mixture of airborne pollutants. Incomplete combustion produces fine particulate matter (PM₂.₅), carbon monoxide, volatile organic compounds and, depending on the fuel and burning conditions, polycyclic aromatic hydrocarbons (PAHs). Some PAHs, including benzo[a]pyrene, are established carcinogens.

These microscopic particles can penetrate deep into the lungs. Certain chemicals carried by them can cause oxidative stress, inflammation and DNA damage. Repeated exposure over time may contribute to lung cancer and other respiratory diseases. However, not every smoke particle is carcinogenic and the risk depends on its chemical composition, concentration, duration of exposure and individual susceptibility.

Candles and oil lamps are not automatically dangerous in ordinary use; poorly ventilated indoor combustion and extensive smoke exposure are the greater concerns. Firecrackers can intensify short-term pollution, while crowded roads, generators and traffic add further emissions. The atmosphere becomes a chemical mixture in which several pollutants act simultaneously.

From Pandal Hopping to Fast-Food Hazards

The exposure does not end when the lights go out. Festive eating introduces another dimension of chemical risk, although not all fast food is carcinogenic.

Deep-fried potatoes, chips and other starchy foods cooked at high temperatures can form acrylamide through reactions between reducing sugars and the amino acid asparagine. Acrylamide is classified as probably carcinogenic to humans, based primarily on animal evidence; the extent of cancer risk from typical dietary exposure in humans remains uncertain.

Meanwhile, repeatedly consuming heavily charred or flame-grilled meat can increase exposure to heterocyclic aromatic amines (HAAs) and PAHs. Regular consumption of processed meat—such as sausages and bacon—is an established cause of colorectal cancer. Importantly, this evidence does not mean that every burger, fried snack, or festive meal causes cancer. Frequency, quantity, preparation and long-term dietary patterns matter.

The Invisible Biology of Risk

Carcinogenesis (the multistep development of cancer) is not an instant consequence of encountering a carcinogen. Certain chemicals can damage DNA directly or after metabolic activation; chronic inflammation and oxidative stress can further contribute to cellular damage. When mutations accumulate alongside failures in DNA repair and normal growth control, cancer may eventually develop.

A few days of celebration do not automatically translate into cancer. The concern is the broader pattern of repeated exposure to polluted air, tobacco smoke, unhealthy dietary habits and other established risk factors over months and years.

The Final Truth

We need not extinguish the spirit of Durga Puja to protect public health. Better ventilation, reduced incense and firecracker emissions, cleaner cooking practices, less traffic congestion and balanced food choices can preserve the celebration while reducing avoidable exposure.

The real victory of Durga is not merely the triumph of good over evil; it is the triumph of informed choices over preventable harm.

A festival should illuminate our streets, not darken the air we breathe. And a feast should nourish life, not become a habitual source of avoidable risk.

Because the most meaningful celebration is one in which devotion, science and public health coexist.