India, Dec. 4 -- As air pollution continues to grip major Indian metros like Delhi and Mumbai each winter, residents are increasingly relying on air purifiers to combat toxic air levels. However, prolonged and continuous use of these devices may have unintended side effects, cautions a health expert.

Dr. Sulaiman Ladhani, consultant pulmonologist at Wockhardt Hospitals, Mumbai Central, told The Indian Express that although air purifiers do not remove moisture directly, running them for long hours in sealed rooms can reduce indoor humidity.

Dr. Ladhani clarified that he is not advising people to stop using air purifiers altogether, but to operate them more judiciously.

He added that pairing air purifiers with a humidifier, a bowl of wat...