Health Risks of Using Mosquito Repellents Overnight

In India, mosquito repellents are widely used, especially during the hot months when diseases like dengue and malaria pose a significant threat. While these repellents help protect against mosquito bites, doctors warn that prolonged use—particularly overnight in closed, poorly ventilated rooms—can have serious health consequences.

Risks of Overnight Use

Experts caution against using mosquito coils and vaporizers overnight in confined spaces. The fumes from these products can be harmful if inhaled for long periods. A single mosquito coil, for example, can release as much smoke as several cigarettes, contributing to headaches, throat irritation, coughing, and worsening respiratory issues such as asthma.

Common Ingredients in Mosquito Repellents

Many commercial mosquito repellents contain synthetic chemicals designed to either repel or kill mosquitoes. Two frequently used ingredients include:

• Allethrin: A synthetic version of pyrethrins, found in products like coils and vaporizers. While effective, extended exposure, particularly in small rooms, can lead to symptoms such as headaches, throat irritation, eye discomfort, or even breathing difficulties.
• DEET (N,N-diethyl-meta-toluamide): Found in sprays, creams, and roll-ons. DEET is a potent repellent but should be used cautiously. High concentrations can irritate the skin and are not recommended for infants under two months. For children, DEET concentrations should be limited to 30%, as advised by the American Academy of Pediatrics.

Are Creams and Roll-ons Safer?

While creams and roll-ons provide targeted protection, they can still lead to skin irritation, allergic reactions, or long-term effects when used frequently. This is especially true for people with sensitive skin or allergies, so caution is needed.

Safe Usage Tips

To minimize health risks when using mosquito repellents, follow these guidelines:

• Keep coils or vaporizers at least 2-3 meters away from your bed.
• Avoid placing repellents near your pillow or directly above your head.
• Ensure better air circulation by leaving a window slightly open.
• Turn off the repellent after a few hours to reduce exposure once the mosquitoes are cleared.

Natural Alternatives

For those looking to avoid chemicals, here are some safer alternatives:

• Mosquito nets: A reliable, chemical-free barrier for protection against mosquitoes.
• Natural repellents: Oils like citronella, neem, and eucalyptus can be effective and are gentler on the skin.
• Electric mosquito zappers: These devices use light to kill mosquitoes without emitting any harmful fumes.