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Indoor Air Quality: A Room-by-Room Guide

People ask us about indoor air quality more than almost anything else, usually because they want everyday breathing to feel a little easier. We give the short answer first, then the detail, with links to the public health sources we trust.

Clean Air at Home · By The Lungora Team · Updated 2026-07-26

The short answer

Indoor air can be more polluted than outdoor air. Ventilating while cooking, keeping humidity between 30 and 50 percent, running a HEPA purifier and banning indoor smoking make the biggest difference.

Americans spend about 90 percent of their time indoors, according to the EPA, and indoor pollutant levels can be two to five times higher than outdoors. That makes the home one of the easiest places to make a real difference to what your lungs breathe.

The kitchen

Gas stoves and frying release particles and nitrogen dioxide. Use the extractor fan every time.

The EPA's approach to indoor air comes down to three steps: control the source, ventilate, and clean the air. Removing a pollutant beats filtering it, and filtering it beats breathing it.

The bedroom

You spend a third of your life here. A HEPA purifier and weekly hot-wash bedding help most.

Older adults, young children and people with heart or lung conditions are most sensitive to poor air quality, so household changes often benefit the most vulnerable people in the home.

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The bathroom

Moisture feeds mould. Run the fan during and for 20 minutes after showers.

You cannot see most of what matters in indoor air. Fine particles, gases and allergens are invisible, which is why an inexpensive monitor or hygrometer often changes habits more than advice alone.

Living areas

Limit candles and incense, vacuum with a HEPA vacuum and open windows when outdoor air is clean.

Fragrance is not the same as freshness. Air fresheners, candles and plug-ins add compounds to the air rather than removing them.

A quick checklist

  • Switch on the cooker hood whenever you cook.
  • Keep humidity between 30 and 50 percent.
  • Place a true HEPA purifier in the bedroom.
  • Wash bedding weekly in hot water.
  • Check the air quality index before outdoor exercise.

If someone in the home smokes, no purifier can fully compensate. A completely smoke-free home and car is the single most protective rule.

Putting it into practice

Small changes compound. Running a range hood, washing bedding weekly and keeping humidity in range each cut exposure a little; together they transform the air in a home over a year.

Choose the single easiest suggestion in this guide and start it today. Quick wins build confidence, and a routine built one small step at a time is far more likely to last than an ambitious plan started all at once.

Where Lungora fits

How does our product relate to this topic? Only at the edges. Lungora is our once-daily capsule with turmeric, CoQ10, alpha lipoic acid, butcher's broom, L-carnitine and 80 mg of magnesium glycinate. It supports everyday respiratory wellness alongside the habits in this article, never in place of them. Details are on the Lungora official website. You may also like our page on what Lungora is.

Common questions

Is indoor air really worse than outdoor air?

It can be, often two to five times higher for some pollutants, according to the EPA.

Do I need an air purifier?

A HEPA purifier helps most in bedrooms, during wildfire smoke and for people with allergies.

Are scented candles bad for breathing?

They add particles and volatile compounds; unscented or no candles is gentler on airways.

Key takeaway

The short version: Indoor air can be more polluted than outdoor air. Build the simple habits first, give any change a month, and see a doctor about symptoms that persist.

Before you order, please read this. Lungora is a dietary supplement, not a treatment for any lung disease, and it never replaces an inhaler, oxygen or prescribed medicine. Turmeric and CoQ10 can affect blood thinners such as warfarin, alpha lipoic acid can lower blood sugar, and butcher's broom can raise blood pressure, so ask your doctor or pharmacist first if any of those apply to you. Shortness of breath, wheezing, chest pain or a cough lasting more than three weeks needs a medical check.

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