Every year, from the first week of October, the chest clinic fills up. The same patients who managed the monsoon without a single bad night are suddenly waking at three in the morning, reaching for an inhaler they had almost forgotten. It is not a coincidence, and it is not in their heads.
Three things happen at once
Stubble burning starts. Paddy is harvested across Haryana and Punjab in October, and the residue is burned to clear fields before the wheat sowing. The smoke travels — Rewari sits downwind of a great deal of it.
The air stops moving. As nights cool, a layer of cold air settles near the ground with warmer air above it. This inversion acts like a lid: the smoke, dust and vehicle exhaust that would normally disperse upward simply stays where people are breathing. The same quantity of pollution produces a far higher concentration in October than in July.
Diwali. Firecracker smoke adds a sharp, short spike of very fine particles on top of an already loaded atmosphere.
Add industrial and construction dust from the Rewari–Dharuhera–Bhiwadi belt, which does not pause for the season, and you have the worst eight weeks of the year for anyone with an airway that reacts.
What it does to your chest
The particles that matter most are the fine ones, PM2.5 — small enough to travel past the nose and throat and reach the smallest airways. There they cause inflammation in the airway lining. For a healthy person that means a few days of throat irritation and a dry cough.
If you already have asthma, COPD or an allergic airway, the same inflammation sits on top of inflammation that is already there. The airway was coping with a reduced margin; the margin disappears. That is why October symptoms appear abruptly in people who were stable all summer, and why reliever inhalers stop lasting the usual six hours.
Children and older people feel it first, because their airways are smaller or their reserve is lower.
What actually helps
Most of the advice circulating at this time of year is useless. These are the things that make a measurable difference.
Take your preventer inhaler, every day, through the whole season. This is the single most effective thing available to you. A preventer works by reducing airway inflammation over days and weeks — it cannot be taken reactively. If you stopped it over the summer because you felt well, restart it now, before the symptoms rather than after. If you are unsure which of your inhalers is the preventer, bring them all in and ask.
Check your inhaler technique. A correctly prescribed inhaler, used wrongly, delivers almost nothing to the lungs. Most people who think their inhaler has stopped working have a technique problem, not a drug problem. Use a spacer — always, for children.
Time your outdoor activity. Pollution is typically worst in the early morning and again after sunset, when the inversion is strongest. If you walk for exercise, late morning is usually better than dawn, which is the opposite of what most people do.
Keep windows shut on bad nights and avoid adding smoke indoors. A mosquito coil, an incense stick or a wood or dung cooking fire in a closed room can expose you to more fine particulate than a day outdoors. If you cook on biomass, ventilation matters more than anything else in this article.
A proper mask, if you must be out in it. A well-fitted N95 filters fine particles. A surgical mask or a cloth mask does not, and gives false reassurance.
Do not wait for it to become an emergency. If your reliever is needed more than twice a week, if you are waking at night, or if you cannot do what you could a month ago, that is the time to be reviewed — not after the attack.
What does not help
Steam inhalation feels soothing and does nothing for airway inflammation. Antibiotics do nothing at all for a cough caused by smoke and dust, and taking them repeatedly makes resistance more likely. Air-purifying plants do not measurably change indoor PM2.5. A room air purifier with a genuine HEPA filter can help in one bedroom, which is a reasonable thing to prioritise if you buy one.
If this happens every year
A cough that returns every October, with every change of weather, is a pattern — and a pattern is diagnosable. Many people treat it as an annual nuisance for a decade before anyone performs spirometry and finds asthma that could have been controlled all along. If that is you, come in during the season rather than after it: assessment while you have symptoms is far more informative.
Frequently asked questions
Is a mask worth wearing in Rewari in winter?
A properly fitted N95 does filter fine particles and is worth it if you work outdoors or commute by two-wheeler. Cloth and surgical masks do not filter PM2.5 and mainly provide reassurance.
Should I start my inhaler before the season or wait for symptoms?
Before. A preventer inhaler reduces inflammation over days, so starting it ahead of the burning season is far more effective than reacting once you are already waking at night.
My cough comes every October and goes by February. Do I need tests?
Yes — that is a pattern worth diagnosing rather than enduring. Seasonal airway symptoms recurring annually are very often undiagnosed asthma or allergy, and spirometry plus allergy testing usually settle it.
Does an air purifier actually work?
One with a true HEPA filter measurably lowers fine particulate in a closed room. It is worth having in the bedroom, where you spend eight hours. It will not help the rest of the house or outdoors.