According to Dr Anil Kumar, Eureka Forbes, India’s Air Pollution Problem Does Not Stop at the Door 

The Eureka Forbes scientist explains how winter smog seeps into homes and why indoor air protection has become unavoidable for families.

According to Dr Anil Kumar, India’s air pollution crisis does not end when people step indoors. During the winter months, air quality across major Indian cities deteriorates sharply, with Air Quality Index readings frequently moving into poor and hazardous ranges. While the health risks of outdoor pollution are widely discussed, the condition of indoor air remains poorly understood, despite the fact that most individuals spend the majority of their time inside homes, offices, schools, and hospitals.
High AQI levels are associated with a range of immediate and long term health effects. Exposure to polluted air can cause irritation of the eyes and throat, persistent coughing, breathlessness, and fatigue. For individuals with existing respiratory or cardiac conditions such as asthma, chronic bronchitis, or heart disease, these effects can intensify rapidly. Children and older adults are particularly vulnerable, as their respiratory systems are either still developing or already compromised. What often goes unnoticed is that indoor spaces offer limited protection during severe pollution episodes.

Dr Anil Kumar explains that polluted outdoor air routinely enters indoor environments through open windows, doors, ventilation systems, and even structural gaps. Once inside, these pollutants combine with indoor contaminants such as dust, pet dander, cooking fumes, incense smoke, and chemical residues from cleaning products. Unlike outdoor air, which is dispersed by wind and atmospheric movement, indoor air tends to remain trapped, allowing harmful particles to accumulate over time.
This accumulation is especially concerning in urban households during winter, when windows are kept closed for longer periods and air circulation is reduced. Fine particulate matter, particularly PM2.5, poses the greatest risk. These microscopic particles are small enough to penetrate deep into the lungs and enter the bloodstream, contributing to respiratory distress, inflammation, and cardiovascular strain. Dr Anil Kumar notes that indoor PM2.5 levels can, in some cases, rival or exceed outdoor concentrations during peak pollution periods.

In this context, the focus on clean indoor air has shifted from being a lifestyle choice to a public health requirement. Dr Anil Kumar points out that air purifiers equipped with high efficiency particulate air filtration are capable of removing a substantial portion of fine particulate matter from enclosed spaces. When used correctly, such devices can bring measurable improvements in indoor air quality within a short period, easing breathing discomfort and reducing exposure to harmful pollutants.
He emphasises that the benefits of cleaner indoor air extend beyond immediate respiratory relief. Improved air quality has been linked to better sleep, fewer allergy related symptoms, and improved overall wellbeing. For households with children, elderly family members, or individuals with respiratory sensitivities, maintaining clean indoor air can significantly reduce health risks during prolonged pollution episodes.

Dr Anil Kumar also stresses that the effectiveness of air purification depends on informed usage. Selecting a purifier appropriate for the size of the room, operating it consistently during high pollution days, and maintaining filters as recommended are essential for achieving meaningful results. Sporadic or incorrect use limits the potential health benefits and creates a false sense of protection.
While indoor air protection offers immediate relief, Dr Anil Kumar is clear that it cannot replace the need for broader environmental action. Long term improvement in air quality requires coordinated efforts to reduce vehicular emissions, regulate industrial pollution, manage construction dust, expand urban green cover, and enforce environmental standards consistently. Until such measures yield tangible results, households remain exposed to daily air quality risks.

He underscores that clean air should be viewed with the same seriousness as access to safe drinking water and proper nutrition. As awareness of indoor pollution grows, more families are beginning to recognise the importance of addressing the air they breathe within their own living spaces. Education, informed decision making, and reliance on scientifically validated technologies are central to this shift.
According to Dr Anil Kumar, protecting indoor air is not about alarmism, but about responding responsibly to present conditions. With air pollution likely to remain a persistent challenge in the near future, taking steps to safeguard indoor environments is one of the most practical ways families can reduce health risks today.

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