There is a rather unglamorous winter ritual that many Delhi residents know too well. You wake up, clear your throat, feel something thick sitting at the back of it, cough a little, and then look for somewhere to spit. It happens again after a walk, during the commute, or after spending time near a busy road. Suddenly, you are carrying tissues, searching for a dustbin and wondering why your throat seems to be producing so much unwanted material. Delhi's pollution season makes this experience particularly uncomfortable. In November 2026, the city's air quality has again entered the Very Poor range at many monitoring stations, with fine particulate matter among the major pollutants. But before blaming every bit of phlegm on pollution, it helps to understand what your body is actually producing, why it increases and how to deal with it without making yourself or the people around you uncomfortable. 

1. Why Does Delhi's Air Make You Want to Clear Your Throat?

Your nose and airways are not passive pipes through which air simply travels. They are lined with mucus, a protective substance that traps dust, particles, and other unwanted material before they travel deeper into the respiratory system. Tiny hair-like structures called cilia help move this mucus towards the throat, where it can be swallowed or expelled. When you breathe polluted air containing fine particles, this protective system can become irritated. Your throat may feel scratchy, your nose may become congested, and you may notice more coughing or mucus. The sensation can be especially uncomfortable in the morning, after commuting, or after time spent outdoors. However, pollution is not the only possible explanation. Allergies, sinus infections, colds, acid reflux, and respiratory conditions can also increase mucus or create a persistent need to clear the throat. The important distinction is that phlegm usually refers to mucus coughed up from the lower respiratory tract, while mucus draining from the nose into the throat is often called postnasal drip. They can feel similar, but their causes may differ. 

2. To Spit or Not to Spit: What Should You Actually Do?

When thick mucus reaches your mouth, spitting it out may feel more comfortable than swallowing it, particularly when you have been coughing repeatedly. There is no need to force yourself to swallow phlegm, but there is also no reason to spit it onto a pavement, roadside, staircase or public space. Carry tissues or a small disposable paper bag, collect the mucus, wrap it securely and put it into a covered waste bin. Wash or sanitise your hands afterwards, particularly if you have been coughing or sneezing. If you are at home, use a tissue or an appropriate sink and clean the area afterwards. Avoid repeatedly forcing your throat to produce mucus by coughing hard or clearing it aggressively; this can irritate the throat further and create a frustrating cycle. Try sipping water instead, allowing your throat to settle. Warm fluids may also feel soothing. Regular hydration helps keep mucus less thick, making it easier for the body's natural clearance mechanisms to do their job. The National Centre for Disease Control's air-pollution advisory also recommends adequate hydration and warm-water gargling as general protective measures. 

3. Making Your Winter Routine Less Miserable

You cannot control Delhi's air quality every morning, but you can reduce some of your exposure and make respiratory irritation less troublesome. Check the AQI before planning outdoor exercise, particularly on Poor, Very Poor or Severe days. When pollution levels are high, reduce strenuous outdoor activity and avoid prolonged exposure near busy roads, construction sites, and other dusty locations. If you must travel outside, a well-fitted N95 or equivalent particulate respirator can help reduce inhalation of fine particles; an ordinary cloth mask or loose face covering does not provide the same protection. At home, keep windows closed when outdoor pollution is high, ventilate when conditions improve, and use wet mopping rather than dry sweeping, which can stir settled dust back into the air. Avoid smoking, incense, and mosquito coils indoors, as these add to the pollution already present in the room. Drink water regularly, get adequate sleep, and avoid repeatedly straining your throat to clear it. These are not miracle cures, and they cannot remove the underlying pollution, but they can make everyday exposure easier to manage. 

4. When That Phlegm Thing Needs a Doctor's Attention

It is easy to dismiss a persistent cough or thick mucus as another seasonal Delhi problem, especially when several people around you seem to be experiencing the same thing. But not every respiratory symptom should be blamed on pollution. A cough that continues, phlegm that becomes increasingly troublesome, repeated chest infections, wheezing or breathlessness deserve medical attention. Blood in the sputum, chest pain, significant breathing difficulty, or a high fever should not be ignored and may require urgent assessment. People with asthma, COPD, heart conditions and other existing health problems, along with older adults and young children, need particular care during severe pollution episodes. Also remember that the colour of mucus alone cannot reliably tell you whether you have a bacterial infection or need antibiotics; that decision belongs to a medical professional. The aim is not to become frightened every time you clear your throat, but to stop treating every symptom as harmless seasonal discomfort. Delhi's winter air may make breathing feel like work, but persistent respiratory problems deserve proper attention rather than another tissue, another cough, and another day of waiting for the pollution to disappear.

References

1. Delhi Air Quality Early Warning System — Current AQI and Forecasts
2. Delhi Government — Ambient Air Quality
3. National Centre for Disease Control — Health Advisory on Air Pollution
4. NCDC — Advisory on Air Pollution and Health
5. Central Pollution Control Board — Health Effects of Chronic Exposure to Smoke
6. Delhi Government — AQI Health Advisory
7. Press Information Bureau — Steps to Address Health Issues Arising from Air Pollution, February 2026