There is a bang louder than the crash itself, a white cloud, and a smell like a fired cap gun. For a second a lot of people think the car is on fire. It almost never is. The airbag did what it was built to do, in less time than it takes to blink, and now you are sitting in a haze of powder with your hands stinging and your ears ringing.
A deployed airbag is a sign of something worth taking seriously. Front airbags are designed to fire in moderate to severe frontal crashes, not in a parking-lot tap. That means the forces in the car were real. This report walks through what an airbag does to a body, which of those effects belong in an emergency room today, and what the week-after exam is for.
The first minute
The cloud is mostly a fine powder that keeps the folded bag from sticking, plus residue from the charge that fires it. It is not smoke from a fire. It can still sting your eyes, irritate your skin and make you cough, especially if you have asthma.
- If you smell fuel, see flames, or the car is in a traffic lane, get out if you can move safely.
- Crack a window or open a door to clear the air.
- Do not rub your eyes. If powder got in them, rinse with clean water as soon as you can.
- Call 911 if anyone is hurt, if anyone is having trouble breathing, or if the scene is not safe.
Emergency room now, not next week
Some airbag effects are not a planned exam question. Go to an emergency room today for any of these:
- Chest pain, or pain that is worse when you take a deep breath
- Trouble breathing, wheezing that does not settle, or coughing that keeps getting worse
- Eye pain, blurred vision, or a feeling that something is still in the eye after rinsing
- A head strike with vomiting, worsening confusion, a severe headache, or weakness or numbness on one side
- A wrist, hand or thumb that is misshapen, badly swollen, or that you cannot move
- A burn that blisters, covers a large area, or is on the face
Our emergency room or injury clinic page draws the full line. If you are not sure, go. Being sent home from an emergency room is a good outcome, not a wasted trip.
What an airbag commonly leaves behind
The skin
Red, scraped patches on the forearms, the inside of the wrists, the chin and the chest are common. They come from friction as the bag unfolds against skin, and some people also get irritation from the residue. Wash the area gently with mild soap and cool water. Watch it over the next day or two. Anything that blisters, spreads, or looks infected needs to be seen by a medical provider.
The hands, wrists and thumbs
Hands on the wheel are in the bag's path. A wrist or thumb that is sore and a little swollen the next morning is common. One that is getting more swollen, will not grip, or hurts to move needs an x-ray from urgent care or an emergency room. Missouri Injury Clinic publishes auto injuries, meaning diagnosis and a treatment plan after a crash, but a possible broken bone is a same-day imaging question first.
The ears
A deployment is loud in a closed car. Ringing ears and muffled hearing for a while afterward are common. If the ringing or hearing loss is still there after a day or two, or comes with dizziness, tell a medical provider.
The chest and collarbone
The bag and the shoulder belt both land on the chest. Soreness along the belt line and the breastbone is common in the days after. New or worsening chest pain is not something to sort out at home. It goes on the emergency list above.
The part that shows up later
The airbag and the belt stop your body. They do not stop your head from moving first and your neck from taking that load. That is why the neck, the upper back and the low back often report in a day or two after the skin has stopped stinging. The National Institute of Neurological Disorders and Stroke notes that whiplash symptoms can take a day or longer to appear. Our 72-hour lag page explains why.
A head that met the bag, even softly, is also a concussion question. Fog, headache, trouble concentrating, light sensitivity or feeling off are worth reporting. Our concussion page covers the signs.
What to tell the exam
When you get examined this week, the history matters. Be ready to say:
- Which airbags went off: steering wheel, dash, side curtain, seat
- Where your hands were on the wheel, and how close you were sitting
- Whether you were belted, and where the belt crossed you
- Whether your head hit the bag, the headrest, the window or anything else
- Whether you went to an emergency room or urgent care first, and what they found
Bring any discharge papers. The first dated exam becomes the starting point for every clinician who sees you after. Our dated record page covers what that record is and is not.
For the next time you get in the car
An airbag works best with space in front of it. The National Highway Traffic Safety Administration publishes vehicle safety guidance that includes airbags. The widely repeated advice is to sit with about ten inches between your breastbone and the center of the steering wheel, keep your hands at about 9 and 3 instead of across the top of the wheel, always wear the belt, and keep children in the back seat. That does nothing for this crash. It is for the drive after the exam.
If an airbag went off, the crash was real. Get seen this week at Missouri Injury Clinic. The Tesson Ferry office is (314) 530-5480, Monday through Thursday 9 to 6 and Friday 9 to noon, closed 12 to 2 daily. Hazelwood is (314) 627-1411 and O'Fallon is (636) 280-0990.