The Hidden Threat of Illegal Mosquito Agarbattis: Why 70% of Them Are as Dangerous as Dengue

In the sweltering heat of Indian summers, a little white stick that promises relief from buzzing insects has become a silent menace. These so‑called mosquito agarbattis—incense sticks marketed as natural repellents—are popping up in local markets, street stalls, and even online platforms. But behind the fragrant smoke lies a dangerous cocktail of chemicals that many doctors now say is as harmful as dengue.

“We’ve started seeing a pattern,” explains Dr. Meera Nair, a pulmonologist at Delhi’s All India Institute of Medical Sciences. “Patients come in with persistent cough, wheezing, and fever that don’t respond to the usual treatments. When we dug deeper, we discovered they’d been burning cheap mosquito incense at home.”

According to a recent survey carried out by the Indian Medical Association (IMA), roughly 70 % of the mosquito agarbattis available in informal channels are either unregistered or blatantly counterfeit. These sticks often contain high concentrations of organophosphates, formaldehyde, and even mercury—substances that are not meant for inhalation.

For most of us, the idea of lighting a stick that smells like lemongrass or sandalwood seems harmless, almost therapeutic. The reality, however, is far from soothing. The smoke can irritate the mucous membranes, trigger asthma attacks, and in severe cases, lead to neurological symptoms such as headaches, dizziness, and nausea. In vulnerable groups—children, the elderly, and those with pre‑existing respiratory conditions—the impact can be catastrophic, resembling the systemic assault that dengue virus inflicts.

One mother from Pune, Sushma Patel, recounted how her two‑year‑old son fell ill after they used a locally bought mosquito agarbatti nightly. “He developed a high fever, a rash, and couldn’t breathe properly. The doctors told us it wasn’t dengue, but the smoke had irritated his lungs badly,” she said, her voice shaking.

The problem is compounded by a lack of regulation. Unlike officially approved mosquito repellents, which must undergo rigorous testing, these illegal incense sticks slip through the cracks. Vendors often label them as “herbal” or “organic” to lure unsuspecting buyers, while the actual composition remains a mystery.

Health officials are urging the public to stay vigilant. The recommended steps are simple: avoid burning any unverified incense, especially in enclosed spaces; opt for EPA‑approved repellents or physical barriers like nets; and report suspicious products to local authorities.

“We can’t afford to treat every cough as a common cold anymore,” Dr. Nair warns. “If you notice persistent respiratory symptoms after using these sticks, seek medical attention immediately.”

Meanwhile, the Ministry of Health has announced a crackdown on manufacturers and sellers of illegal mosquito agarbattis. In the coming weeks, raids are planned in major wholesale markets, and a public awareness campaign will be launched across television, radio, and social media.

Until then, the safest approach is to stay informed, question what you burn, and remember that sometimes the quickest fix can carry the heaviest price.