Every day you take thousands of breaths, mostly without noticing. Your lungs quietly pull in oxygen and push out carbon dioxide, but they’re also exposed to whatever is in the air around you, from cigarette smoke and wildfire haze to cleaning fumes, mold and workplace dust.
Many of the biggest threats to lung health are things you can reduce or avoid. This Nemin.io guide covers practical ways to protect your family’s breathing at home, outdoors and on the job, how to lower the risk of respiratory infections and which symptoms should never be ignored.
Key Takeaways
- Not smoking or vaping, and keeping your home and car smoke-free, is the most important step you can take for your lungs.
- Test your home for radon, an invisible gas that can cause lung cancer, and install carbon monoxide alarms.
- Check the daily Air Quality Index and adjust outdoor activity on high-pollution or wildfire smoke days.
- If your job involves dust, fumes or chemicals, you have a right to hazard information, training and protective equipment.
- Vaccines, regular activity and good asthma or COPD care help keep lungs working well.
Clear the Air: Smoking, Vaping and Secondhand Smoke
Smoking is the leading cause of lung cancer and chronic obstructive pulmonary disease (COPD). It also worsens asthma and raises the risk of lung infections. Quitting helps at any age, and the benefits to your heart and lungs begin soon after your last cigarette.
Steps to quit
- Pick a quit date within the next two weeks and tell people who will support you.
- Call 1-800-QUIT-NOW (1-800-784-8669) for free coaching from your state’s quitline, or visit Smokefree.gov for texting programs and apps.
- Ask your doctor or pharmacist about quit medicines. Nicotine patches, gum and lozenges are sold over the counter; follow the label. Medicine plus counseling works better than either alone.
- If you slip, don’t give up. Many people who quit for good needed several tries.
Vaping and secondhand smoke
E-cigarette aerosol isn’t harmless water vapor. It usually contains addictive nicotine plus fine particles and chemicals that can irritate the lungs, and it’s especially risky for kids, teens, young adults and people who are pregnant.
There’s also no risk-free level of secondhand smoke. Keep your home and car completely smoke-free, even with the windows down. Children exposed to smoke are more likely to have asthma attacks, ear infections and other respiratory illnesses.
Breathing Easier at Home
Indoor air can hold more pollutants than you might expect, and families spend much of their time inside.
Test for radon
Radon is a natural radioactive gas that seeps up from the ground into homes. You can’t see or smell it, and it’s the leading cause of lung cancer among people who have never smoked. Inexpensive test kits are sold at hardware stores and through state radon programs. If levels are high, a certified professional can install a system that vents the gas outdoors.
Control moisture and mold
- Fix leaks promptly and dry wet materials within a day or two.
- Use bathroom and kitchen exhaust fans that vent outdoors.
- Keep indoor humidity between about 30 and 50 percent.
- Clean small patches of mold on hard surfaces with soap and water, and call a professional for large areas.
Cut down on fumes and dust
- Put carbon monoxide alarms on every level of your home and outside sleeping areas, and never run a generator, grill or car in an enclosed space.
- Run the range hood when cooking, especially on a gas stove.
- Open windows when using strong cleaners, paint or glue, and never mix bleach with ammonia or acidic cleaners.
- Avoid air cleaners that intentionally produce ozone, which irritates the lungs.
Breathing Easier Outdoors
Check the Air Quality Index
The Air Quality Index (AQI) is a color-coded daily scale of air pollution. You can find it on AirNow.gov, in many weather apps and on local news.
- Green and yellow: fine for most people; unusually sensitive people may ease up on yellow days.
- Orange: children, older adults, pregnant people and anyone with heart or lung disease should limit long or strenuous outdoor activity.
- Red, purple and maroon: everyone should cut back on outdoor exertion, and sensitive groups should stay indoors as much as possible.
Wildfire smoke
Smoke from wildfires, even hundreds of miles away, carries fine particles deep into the lungs. On smoky days:
- Stay indoors with windows and doors closed, and set your air conditioner to recirculate.
- Run a portable HEPA air cleaner in the room where you spend the most time.
- If you must go outside, wear a well-fitted N95 respirator. Cloth and surgical masks don’t filter fine smoke particles well.
- If you have asthma or COPD, keep your medicines handy and follow your action plan.
Exercising outside
Staying active is good for your lungs. On hot summer days, ozone tends to build in the afternoon, so mornings are often better for workouts. Choose routes away from busy roads and move indoors on bad air days.
Protecting Your Lungs at Work
Many jobs expose workers to substances that can harm the lungs over time, often without symptoms until years later. Examples include silica dust from cutting stone or concrete, asbestos, welding fumes, chemical vapors from paints, solvents and salon products, and grain dust on farms.
Your workplace checklist
- Ask for safety data sheets and training on the materials you handle; employers are required to provide them.
- Use ventilation and dust controls, such as wet cutting or local exhaust, whenever they’re available.
- If a respirator is required, get fit-tested and trained. A loose seal lets contaminated air leak in.
- Change out of dusty work clothes before going home so you don’t bring dust to your family.
- Tell your doctor exactly what you do at work. Asthma symptoms that improve on weekends or vacations may be work-related.
Workers can report safety concerns to the Occupational Safety and Health Administration (OSHA) and are legally protected from retaliation.
Preventing Respiratory Infections
Colds, flu, COVID-19, RSV, whooping cough and pneumonia spread easily through the air and on hands.
- Stay current on vaccines. Depending on age and health, vaccines may be recommended for flu, COVID-19, RSV, pneumococcal disease (a common cause of pneumonia) and whooping cough. Ask your doctor or pharmacist which ones your family needs this year.
- Wash your hands with soap and water for at least 20 seconds, or use an alcohol-based sanitizer.
- Cover coughs and sneezes with a tissue or your elbow.
- Stay home when you’re sick, and consider a well-fitted mask if you must be around others.
Our preventive health guide covers checkups and screenings by age. If you have a long history of heavy smoking, also ask your doctor whether yearly lung cancer screening is right for you.
Living Well With Asthma and COPD
Ongoing cough, wheezing, chest tightness or getting winded during everyday tasks aren’t just signs of aging or being out of shape. A simple breathing test called spirometry helps doctors diagnose asthma and COPD, and both can be managed well with the right plan.
Make the most of your treatment
- Work with your doctor on a written action plan that tells you what to do when symptoms flare.
- Ask a pharmacist or nurse to watch you use your inhaler. Poor technique is common and means less medicine reaches your lungs.
- Track how often you reach for your quick-relief inhaler. Needing it more often signals that your condition isn’t well controlled.
- Ask about pulmonary rehabilitation, a supervised exercise and education program for people with chronic lung disease.
Two breathing techniques to try
Pursed-lip breathing: breathe in through your nose for about two counts, then purse your lips as if blowing out a candle and breathe out gently for about four counts. This can ease breathlessness during activity.
Belly breathing: with one hand on your chest and one on your belly, breathe in through your nose so your belly rises while your chest stays fairly still, then exhale slowly.
Regular physical activity strengthens your breathing muscles. If you’re getting back into exercise, our guide to starting exercise offers a safe, gradual approach, and our Respiratory Health section has more articles like this one.
When to See a Doctor
Make an appointment for a cough that lasts more than three weeks, new wheezing, breathlessness that’s slowly getting worse or unexplained weight loss along with a cough. Get urgent care for:
- Severe shortness of breath, or struggling to speak in full sentences
- Blue, gray or very pale lips, face or fingernails
- Chest pain or pressure
- Coughing up blood
- A quick-relief inhaler that isn’t helping, or needing it more often than your action plan allows
- High fever with a cough and fast or difficult breathing
- In children, very fast breathing, skin pulling in between the ribs, grunting or flaring nostrils
- Headache, dizziness or nausea that several people in the home feel at once, which can signal carbon monoxide; get everyone outside right away
For emergencies, readers in the US should call 911.
Frequently Asked Questions
Are e-cigarettes safer than smoking cigarettes?
E-cigarettes generally expose users to fewer harmful chemicals than burning tobacco, but they aren’t safe, and their long-term effects on the lungs are still being studied. If you’ve switched completely from cigarettes, aim to quit nicotine altogether; FDA-approved quit medicines and counseling can help.
Do home air purifiers really help?
A portable air cleaner with a true HEPA filter can reduce smoke, dust, pollen and pet dander in a single room. Choose one sized for your room and replace filters as directed. It won’t fix the source of a problem, so also keep up ventilation and moisture control.
Can I exercise if I have asthma?
Most people with well-controlled asthma can be active. Warm up gradually, keep your quick-relief inhaler with you and ask your doctor whether to use medicine before exercise. If workouts regularly trigger symptoms, it’s time to revisit your treatment plan.
How can I tell if a cough is just from a cold?
A cold-related cough usually fades over a week or two, though it can linger. See a doctor if a cough lasts more than three weeks, keeps getting worse, brings up blood or comes with fever, chest pain or shortness of breath.
Sources and Further Reading
Find more family-friendly health guides on the Nemin.io homepage. These organizations also offer trustworthy information:
- American Lung Association
- National Heart, Lung, and Blood Institute (NHLBI)
- Centers for Disease Control and Prevention (CDC)
- U.S. Environmental Protection Agency (EPA)
- Smokefree.gov, from the National Cancer Institute
This guide is for general education only and is not medical advice. Please talk to your doctor about your own symptoms, health conditions and treatment options.
