There is no medication that kills rhinovirus, so treating it in babies comes down to keeping them comfortable, hydrated, and breathing as easily as possible while the infection runs its course. Most cases clear up in under seven days, though symptoms can linger for up to two weeks. The good news: the vast majority of babies recover without any complications, and the tools you need are simple ones you can use at home.
Why There’s No “Cure” for Rhinovirus
Rhinovirus is the most common cause of the common cold. Antibiotics don’t work against it (they only target bacteria), and no antiviral medication exists for this virus. The FDA does not recommend over-the-counter cough and cold medicines for children younger than 2 because they can cause serious, potentially life-threatening side effects. Manufacturers voluntarily label these products with a stronger warning: “Do not use in children under 4 years of age.” That includes decongestants, cough suppressants, and combination cold formulas. Homeopathic cough and cold products are also not recommended for children under 4, as the FDA is not aware of any proven benefits.
What you can do is manage each symptom individually with safe, low-tech approaches.
Clearing a Stuffy Nose
Nasal congestion is usually the most disruptive symptom for babies because they breathe primarily through their noses, especially during feeding. Saline drops paired with gentle suctioning is the single most effective tool you have. Place two to three drops of store-bought saline solution in one nostril, wait a few seconds to let it loosen the mucus, then use a bulb syringe or a newer nasal aspirator to suction it out. Repeat on the other side. You can do this one to two times a day, or more often if your baby is clearly struggling to eat or sleep.
A few practical tips: suction before feedings rather than after, since a clear nose makes nursing or bottle-feeding much easier. Squeeze the air out of the bulb syringe before placing the tip at the edge of the nostril, then release slowly. Clean the syringe thoroughly with warm soapy water after each use and let it air dry completely to prevent mold from growing inside.
Adding Moisture to the Air
A humidifier in your baby’s room helps keep nasal passages from drying out and makes mucus easier to clear. Cool mist humidifiers are the standard recommendation for homes with young children because there’s no burn risk from hot steam. However, ultrasonic cool mist models can release minerals and bacteria into the air if they aren’t cleaned properly.
Clean your humidifier at least once a week by filling the tank with enough distilled white vinegar to cover the parts that touch water, letting it sit for 20 minutes, then scrubbing the cracks and corners with a toothbrush. Rinse thoroughly and air dry. Skip chemical cleaners. If the maintenance feels like too much, an evaporative humidifier is a good alternative. Consumer Reports testing found that this type emits neither bacteria nor minerals, though you’ll need to change the filter regularly.
Keeping Your Baby Hydrated
Babies lose extra fluid when they’re congested, running a fever, or producing more mucus than usual. For infants under six months, breast milk or formula is all they need. For babies older than six months, you can offer small sips of water between regular feedings. The goal is to maintain normal feeding frequency even if your baby takes slightly less at each session. Shorter, more frequent feedings often work better than trying to push a full feeding when a baby can’t breathe well through their nose.
Watch for signs of dehydration: fewer wet diapers than usual is the clearest signal. No wet diaper for three hours or longer in an infant warrants attention. Other signs include a dry mouth, no tears when crying, and unusual sleepiness or fussiness.
Managing Fever Safely
A low-grade fever is your baby’s immune system doing its job, and it doesn’t always need to be treated. Infant acetaminophen is appropriate for babies two months and older, and infant ibuprofen can be used starting at six months. Dosing is based on your baby’s weight, so check the product label or call your pediatrician’s office for the correct amount if you’re unsure.
Two fever thresholds matter. A baby younger than 3 months with a rectal temperature of 100.4°F (38°C) or higher needs immediate medical attention, even if they seem otherwise fine. For babies 3 months and older, the threshold for urgent contact is 104°F (40°C) or higher. A rectal thermometer is the most accurate method for infants.
Safe Sleep During a Cold
It’s tempting to prop your baby up to help with congestion, but the safe sleep guidelines do not change when a baby is sick. Babies should always sleep on their backs, on a firm flat surface, for every nap and every nighttime sleep until they turn one. Side sleeping is not considered a safe alternative. There is no evidence that healthy babies placed on their backs are more likely to choke, even with congestion. Babies automatically swallow or cough up fluid when they’re on their backs.
What you can do before sleep is run through a saline-and-suction routine to clear the nose, run the humidifier in the room, and keep the room at a comfortable temperature. Avoid adding blankets, pillows, or wedges to the crib.
One Cough Remedy to Avoid
Honey is an effective cough soother for older children, but it is strictly off-limits for any baby under 12 months. Honey can contain spores that cause infant botulism, a rare but serious illness. This applies to all forms of honey, including honey-containing products, pasteurized honey, and “raw” or organic varieties. There is no safe amount for babies under one year.
When a Cold Becomes Something More Serious
Rhinovirus typically causes nothing worse than a miserable few days, but it can occasionally lead to secondary infections including middle ear infections, bronchiolitis (infection of the small airways), sinus infections, and in rarer cases, pneumonia. Rhinovirus is also one of the most common triggers for wheezing episodes and reactive airway disease in young children.
Learn to recognize the signs of respiratory distress, which signal that your baby is working too hard to breathe:
- Nasal flaring: the nostrils spread wide open with each breath
- Retractions: the skin pulls inward just below the neck, under the breastbone, or between the ribs with each breath
- Wheezing: a tight, whistling, or musical sound with each breath, suggesting the airways have narrowed
- Rapid breathing: noticeably faster than normal, especially at rest or during sleep
- Color changes: bluish tint around the lips or fingernails
Other reasons to call your pediatrician: symptoms that seem to improve and then suddenly worsen (a common pattern with secondary bacterial infections), a new fever appearing after several days without one, ear tugging or increased fussiness that suggests ear pain, or a cough that persists well beyond two weeks. A baby who refuses to eat or drink for multiple feedings in a row also needs medical evaluation, since dehydration can develop quickly in infants.
What Recovery Looks Like
Most babies start to turn the corner around day four or five. The runny nose often shifts from clear and watery to thicker and yellowish before it tapers off. This color change is a normal part of the immune response and doesn’t automatically mean a bacterial infection has developed. Congestion and a mild cough can linger after other symptoms have resolved, sometimes for a full two weeks. As long as your baby is eating well, producing normal wet diapers, and gradually improving, this extended tail of mild symptoms is expected.